ArticlePDF Available

An ornithological expedition to the Lakshadweep archipelago: Assessment of threats to pelagic and other birds and recommendations

Authors:
  • Ela Foundation and Ornithology, Ethno-Ornithology & Natural Sounds Laboratory (OENSL), Pune, India

Abstract and Figures

The present 2 nd Pelagic Birds Survey from 12–16.iii.2006, a joint effort of ELA Foundation, Pune and Ecological Society, Pune together with Indian Coast Guard, was carried out after a lapse of 16 years. The first part of this survey focused on pelagic bird life off the western coast of India, in the Arabian Sea, and was completed in October–November 2005 (Pande 2005). Here we present the findings of the second lap of our survey, which was restricted to the Lakshadweep archipelago. Pitti Island, a part of the Lakshadweep archipelago, is an Important Bird Area (Islam & Rahmani 2004). Methods Observations were made from ICGS Annie Besant during the inter-island voyages on the Arabian Sea. Motorised 'Geminis' were used for reaching the various islands, reefs or sand flats from the ship. We swam to a few sand flats and reefs when the water around their shores had sharp rocky projections that would damage our inflatable boats. Landing on some islands was extremely difficult due to powerful breakers and the skills of the highly trained crew of ICGS Annie Besant was crucial to a successful touchdown. It is worth documenting here that several previous observers had to abandon their studies due to inability to land on Pitti and other islands. We visited 13 localities (including 11 islands and sand flats and 2 offshore waters near islands) of the Lakshadweep archipelago. We actually landed on sand flats and islands. Only in case of Agatti and Kavaratti islands, the survey was restricted to the offshore marine waters. Observations were made during the inter-island voyages and also after landing on the various islands, etc., while walking on them. Flocks were counted when they re-settled on the ground, after we had landed. Eggs were physically counted. Species composition was also recorded. Photographic documentation with still and video cameras was done. All observations were made during the daylight hours. Eight species of pelagic birds from three families were recorded during our survey—one species from the Phaethontidae, one from tercorariidae and six from Laridae. In addition to these 19 non-pelagic species were also recorded.
No caption available
… 
No caption available
… 
No caption available
… 
No caption available
… 
No caption available
… 
Content may be subject to copyright.
4Indian Birds Vol. 3 No. 1 (January–February 2007)
An ornithological expedition to the Lakshadweep archipelago:
Assessment of threats to pelagic and other birds and recommendations
Satish Pande, Niranjan R. Sant, Satish D. Ranade, Shivkumar N. Pednekar,
Premsagar G. Mestry, Sanjay S. Kharat & Vaibhav Deshmukh
Pande, S., Sant, N. R., Ranade, S. D., Pednekar, S. N., Mestry, P. G., Kharat, S. S. & Deshmukh, V. 2007. An ornithological expedition to the
Lakshadweep archipelago: Assessment of threats to pelagic and other birds and recommendations. Indian Birds 3 (1): 2–12.
Satish Pande, ELA Foundation, Pune. C-9, Bhosale Park, Sahakarnagar-2, Pune 411009, Maharashtra, India. Email: pande.satish@gmail.com
Niranjan R. Sant, 27, Adarsha Nagar, Vadgao, Belgaum 590005, Karnataka, India.
Satish D. Ranade, Mahatma Nagar, Plot 177, Trimbak Rd., Nashik 422007, Maharashtra, India.
Shivkumar N. Pednekar, 1676, Ganesh Niwas, Rankala Vesh, Kolhapur 416012, Maharashtra, India.
Premsagar G. Mestry, Gulmohor Colony, Chawdar Tale, Mahad 402301, Raigad District, Maharashtra, India.
Sanjay S. Kharat, Shree Residency, Flat No 37, Dapodi, Pune 411012, Maharashtra, India.
Vaibhav Deshmukh, Deshmukh Clinic, Near Jain Mandir, Bazar Peth, Alibag 402201, Maharashtra, India.
Introduction
Several previous reports have documented the avifauna of
Lakshadweep Archipelago: Hume (1876), Alcock (1902),
Gadow & Gardiner (1903), Ellis (1924), Betts (1939), Burton
(1940), Bourne (1960), Ramuni (1962), Watson et al. (1963),
Mathew & Ambedkar (1964), Bailey et al. (1968), Anon. (1970,
1991), Subiah (1978), Ripley (1982), Chapman (1984),
Bhaskaran (1985), Livingstone (1987), Ali & Ripley (1989),
Bourne (1989), Mohan (1989), Daniels (1992), Kurup &
Zacharias (1994), Robertson (1994), and Santharam et al.
(1996).
The last ornithological survey of the archipelago was in
1990–1991 (Santharam et al. 1996). The present 2nd Pelagic
Birds Survey from 12–16.iii.2006, a joint effort of ELA
Foundation, Pune and Ecological Society, Pune together with
Indian Coast Guard, was carried out after a lapse of 16 years.
The first part of this survey focused on pelagic bird life off the
western coast of India, in the Arabian Sea, and was completed
in October–November 2005 (Pande 2005). Here we present
the findings of the second lap of our survey, which was
restricted to the Lakshadweep archipelago. Pitti Island, a part
of the Lakshadweep archipelago, is an Important Bird Area
(Islam & Rahmani 2004).
Methods
Observations were made from ICGS Annie Besant during
the inter-island voyages on the Arabian Sea. Motorised
‘Geminis’ were used for reaching the various islands, reefs
or sand flats from the ship. We swam to a few sand flats and
reefs when the water around their shores had sharp rocky
projections that would damage our inflatable boats. Landing
on some islands was extremely difficult due to powerful
breakers and the skills of the highly trained crew of ICGS
Annie Besant was crucial to a successful touchdown. It is
worth documenting here that several previous observers had
to abandon their studies due to inability to land on Pitti and
other islands.
We visited 13 localities (including 11 islands and sand
flats and 2 offshore waters near islands) of the Lakshadweep
archipelago. We actually landed on sand flats and islands.
Only in case of Agatti and Kavaratti islands, the survey was
restricted to the offshore marine waters. Observations were
made during the inter-island voyages and also after landing
on the various islands, etc., while walking on them. Flocks
were counted when they re-settled on the ground, after we
had landed. Eggs were physically counted. Species
composition was also recorded. Photographic documentation
with still and video cameras was done. All observations were
made during the daylight hours.
Study area and study period
The various islands, sand flats and reefs of the Lakshadweep
archipelago (8º0’–12º30’N 71º–74ºE) which lies from about
220–440 km from the west coast of Kerala, that we visited
were: Cherbaniani, Byramgore, Bitra, Pitti, Bangaram,
Tinnakara, Parli 1 and Parli 2, Agatti’s offshore waters, Suheli
Valiyakara, Suheli Pitti, Suheli Cheriyakara and Kavaratti’s
offshore waters. The northern most point we covered was
Cherbaniani Island (12º24’N 71º53’E) and southern most,
Suheli Cheiyakara Island 10º02’N 72º17’E. Along with these
islands the inter-island waters were also surveyed. Due to a
time constraint, we avoided the more populated islands of
Lakshadweep, since there was no significant pelagic avian
life from these islands in any of the previous reports.
Observations and Results
Eight species of pelagic birds from three families were
Brown Noddy Anous stolidus
Niranjan Sant
Indian Birds Vol. 3 No. 1 (January–February 2007) 5
recorded during our survey—one species from the
Phaethontidae, one from Stercorariidae and six from Laridae.
In addition to these 19 non-pelagic species were also recorded
(Table 1). We observed that Lesser Crested Tern Sterna
bengalensis had the widest distribution, occurring on 13
islands followed by Large Crested Tern S. bergii, which was
found on eight islands. Sooty Tern S. fuscata, Brown Noddy
Anous stolidus, Whimbrel Numenius phaeopus and Common
Sandpiper Actitis hypoleucos were recorded on 5 islands.
Ruddy Turnstone Arenaria interpres and Pond Heron Ardeola
grayii were recorded on four islands. Lesser Sand Plover
Charadrius mongolus and Grey Heron Ardea cinerea were seen
on three islands while the other species were seen only on
two or one of the islands surveyed.
At least 31 species of pelagic and shore birds are reported
from Lakshadweep (Kurup & Zacharias 1994; Robertson
1994). We have not added any new species to this list. Daniels
(1992) reported Masked Sula dactylatra and Red-footed S. sula
Booby as resident birds but we did not spot them during our
survey.
Our observations on major marine tern species
encountered on various islands are presented in Table 2. Sooty
Tern was the most abundant species followed by Brown
Noddy, Large Crested Tern and Lesser Crested Tern. Percent
pairs of the two species, Sooty Tern and Brown Noddy, found
breeding at Cherbaniani and Pitti islands are given in
Table 3. It was observed that pairs of both these species laid
only one egg each.
Relative percent distribution of terns irrespective of species
recorded on various islands in Lakshadweep Archipelago
has been shown in Fig. 1. Percent occurrence of various terns
in Lakshadweep Archipelago and percent terns of each species
that were breeding has been shown in Fig. 2.
A flock of Brown Noddies Anous stolidus
Niranjan Sant
A Brown Noddy Anous stolidus pair
Niranjan Sant
6Indian Birds Vol. 3 No. 1 (January–February 2007)
Breeding colonies were recorded only on two islands,
particularly Cherbaniani (Belapani Reef) and Pitti. However,
Cherbaniani, Pitti, Suheli Pitti and Byramgore sandflats, all
appear to be important breeding and / or roosting sites for
birds. The previous nesting islands like Tinnakara and Suheli
group of islands are presently not used by any of the marine
terns for breeding (Kurup & Zacharias 1994). It is therefore
important to protect these three islands in addition to Pitti
Island, which is already an IBA but does not have any legal
protection status. We have photographed the Grey-backed
Tropicbird Phaethon aethereus, probably for the first time in
Indian marine waters, at Cherbaniani sand flat, though
previous observers have reported it earlier.
Table 1. Pelagic and shore birds of the Lakshadweep archipelago
Species Approx. no. Islands of occurrence Earlier records1
Pelagic birds
Procellariidae
Barau’s Petrel Pterodroma baraui -- *
Jouanin’s Petrel Bulweria fallax -- *
Wedge-tailed Shearwater Puffinus pacificus -- *
Flesh-footed Shearwater P. carneipes -- *
Audubon’s Shearwater P. lherminieri -- *
Persian Shearwater P. persicus -- *
Hydrobatidae
Wilson’s Storm-Petrel Oceanites oceanicus -- *
Black-bellied Storm-Petrel Fregetta tropica -- *
White-bellied Storm-Petrel F. grallaria -- *
Swinhoe’s Storm-Petrel Oceanodroma monorhis -- *
Phaethontidae
Grey-backed Tropicbird Phaethon aethereus 41 *
Sulidae
Masked Booby Sula dactylatra -- *
Red-footed Booby S. sula -- *
Brown Booby S. leucogaster -- *
Fregatidae
Great Frigatebird Fregata minor -- *
Stercorariidae
South Polar Skua Catharacta antarctica -- *
Parasitic Jaeger S. parasiticus -- *
Pomarine Jaeger Stercorarius longicaudus 113 *
Laridae
Threats
Threats to avian and other marine life and marine ecosystem,
as perceived by us during our survey in March 2006 are listed
below. Continued on page 8... Large Crested Tern Sterna bergii
Niranjan Sant
Indian Birds Vol. 3 No. 1 (January–February 2007) 7
Lesser Crested Tern Sterna bengalensis 2,700+ 1 to 13 *
Large Crested Tern S. bergii 3,200+ 1, 2, 4, 9, 10, 11, 12, 13 *
White-cheeked Tern S. repressa 40+ 1 *
Bridled Tern S. anaethetus 20+ 13 *
Sooty Tern S. fuscata 15,200+ 1, 2, 4, 9, 13 *
Brown Noddy Anous stolidus 9,200+ 1, 2, 4, 11, 13 *
Non-pelagic birds
Charadriidae
Lesser Sand Plover Charadrius mongolus 10 1, 3, 4 *
Greater Sand Plover C. leschenaultii 13 *
Scolopacidae
Bar-tailed Godwit Limosa lapponica 4 6, 8 *
Whimbrel Numenius phaeopus 22 4, 5, 6, 7, 8 *
Common Greenshank Tringa nebularia 16 -
Green Sandpiper T. ochropus 46 -
Spotted Sandpiper T. glareola 16 -
Terek Sandpiper Xenus cinereus 26 -
Common Sandpiper Actitis hypoleucos 13 5, 7, 8, 10, 11 -
Ruddy Turnstone Arenaria interpres 28 4, 5, 10, 11 *
Dromadidae
Crab-Plover Dromas ardeola 61 *
Ardeidae
Grey Heron Ardea cinerea 11 6, 8, 10 -
Indian Pond-Heron Ardeola grayii 5 5, 6, 7, 8 -
Pandionidae
Osprey Pandion haliaetus 2 7, 13 -
Laridae
Little Tern Sterna albifrons 10+ 13 -
Cuculidae
Asian Koel Eudynamys scolopacea 15 -
Apodidae
Asian Palm Swift Cypsiurus balasiensis Several 3, 4 -
Hirundinidae
Barn Swallow Hirundo rustica Several 5, 10 -
Zosteropidae
Oriental White-eye Zosterops palpebrosus Several 5, 10 -
1 Kurup & Zacharias 1994; Robertson 1994.
Abbreviations
1=Cherbaniani (Belapani Reef); 2=Byramgore (Chereapani Reef); 3=Bitra Par Atoll; 4=Pitti Island; 5=Bangaram Atoll;
6=Tinnakara Island; 7=Parli-1 Atoll; 8=Parli-2 Atoll; 9=Agatti Island’s offshore waters; 10=Suheli Valiyakara Atoll;
11=Suheli Pitti Atoll; 12=Suheli Cheriyakara Atoll; 13=Kavaratti Island’s offshore waters.
Species Approx. no. Islands of occurrence Earlier records1
8Indian Birds Vol. 3 No. 1 (January–February 2007)
Table 2. Island-wise population and occurrence of terns
Island-wise occurrence of individual bird species, number of eggs and the species-wise distribution of birds in the
Lakshadweep archipelago, in March 2006.
Island ST BN LrCT LsCT WCT BT Total Eggs
Cherbaniani 5,000 1,700 1,900 760 40 0 9,400 1,200
% Occurence -53.20% -18.10% -20.20% -8.10% -0.40% -30.70%
Byramgore 650 250 50 500 0 0 1450 0
% Occurence -44.80% -17.20% -3.50% -34.50% -4.70%
Bitra 0 0 0 4 0 0 4 0
Pitti 9,560 6,600 150 50 0 0 16,360 1,790
% Occurence -58.40% -40.40% -0.90% -0.30% -53.40%
Bangaram 0 0 0 150 0 0 150 0
% Occurence -0.48%
Tinnakara 0 0 0 10 0 0 10 0
Parli 1 0 0 0 5 0 0 5 0
Parli 2 0 0 0 2 0 0 2 0
Agatti offshore 4 0 10 150 0 0 164 0
% Occurence -2.40% -6.10% -91.50% -0.50%
Suh. Valiyakara 0 0 47 0 0 0 47 0
Brown Noddy Anous stolidus incubating
Satish Pande
Indian Birds Vol. 3 No. 1 (January–February 2007) 9
Figure 1. Distribution of terns on various islands in the
Lakshadweep archipelago in March 2006 (PT-Pitti; CHR-
Cherbaniani; SUPT-Suheli Pitti; BY-Byramgore; KVR-
Kavaratti; OT-Other islands).
Figure 2. Occurrence of various terns in the Lakshadweep
archipelago and breeding statistics recorded in March 2006.
(ST-Sooty Tern; BN-Brown Noddy; LrCT-Large Crested
Tern; LsCT-Lesser Crested Tern; WCT-BT-White-cheeked
Tern and Bridled Tern. BRD-Breeding; OCC-Occurrence.)
Abbreviations
BN = Brown Noddy; BT = Bridled Tern; LrCT = Large Crested Tern; LsCT = Lesser Crested Tern; ST = Sooty Tern; WCT =
White-cheeked Tern.
Suh. Pitti 0 150 750 1,000 0 0 1,900 0
% Occurence -7.90% -39.50% -52.60% -6.20%
Suh. Cheriyakara 0 0 100 100 0 0 200 0
% Occurence -0.60%
Kavaratti offshore 84 590 252 10 0 20 956 0
% Occurence -8.80% -61.70% -26.40% -1.00% -2.10% -3.10%
Total 15,298 9,290 3,259 2,781 40 20 30,648 2,990
% Occurrence 49.90% 30.30% 10.60% 9.00% 0.10% 0.10% 100% -
Island ST BN LrCT LsCT WCT BT Total Eggs
Courting Brown Noddies Anous stolidus
Niranjan Sant
Juvenile Large Crested Tern Sterna bergii
Niranjan Sant
10 Indian Birds Vol. 3 No. 1 (January–February 2007)
1. Pitti and Cherbaniani Islands attract local residents
for guano collection. During these visits poaching of
eggs and trapping of nesting pelagic birds for eating
has been documented by several observers in the past
(Kurup & Zacharias 1994). We have also noted heaps
of broken eggshells and mounds of feathers confirming
that this practice is still prevalent. The entire colony
has been earlier ransacked for eggs (Mathew et al. 1991).
2. Guano collection is also rampant as evident by more
than one dozen plastic bags filled with guano that we
recorded on Cherbaniani (Belapani reef).
3. We noticed some Sooty Terns entangled in the frayed
and torn edges of plastic guano collection bags. Those
alive were rescued and released.
4. Extensive coconut palm plantations on several islands
like Bitra, Parli 1 & 2, Tinnakara, Suheli Veliyakara
and Cheriyakara have resulted in their being
abandoned as nesting sites by the birds. Nesting was
previously documented in Bitra and Suheli group of
islands (Mathew & Ambedkar 1964). Growing human
population has clearly put a pressure on the available
land and increasingly, uninhabited islands are being
opened for human activities. These activities are clearly
detrimental to the birds. Construction of a tourist hotel
at Bangaram has resulted in absence of nesting by
pelagic birds at this place.
5. Opening of Suheli Chriyakara to humans has resulted
in frequent visits to the adjacent Suheli Pitti Island by
people and fishermen and this has driven away nesting
pelagic birds from Suheli Pitti as well. Nesting was
documented here in the recent past (Mathew &
Ambedkar 1964).
6. We noted liberal use of rodenticides like ‘Roban’ (Zinc
compounds) on several islands like Tinnakara, Parli 1
Table 3. Breeding pairs on Cherbaniani and Pitti islands in March 2006
Island Sooty Tern Breeding pairs Brown Noddy Breeding pairs
Cherbaniani 5, 000 48% 1, 700 0%
Pitti 9, 560 29.30% 6, 600 11.80%
Total 14, 560 35.70% 8, 300 9.40%
Mixed colony of Sooty Terns Sterna fuscata and Brown Noddies Anous stolidus
Niranjan Sant
Indian Birds Vol. 3 No. 1 (January–February 2007) 11
& 2 and Suheli Veliyakara. The soil samples in some of
the islands have shown alarmingly high levels of Zinc,
which is toxic (Bat et al. 1999).
7. Bio-magnification of toxic Zinc is probably already
occurring since samples of debris from bird carcasses
from Pitti Island, which is devoid of any vegetation
and an important breeding ground for pelagic terns,
have also revealed higher than permissible levels of
Zinc.
8. Alteration of pH of water towards acidic side is seen
in a few lagoons. This could be the result of the
prolonged practice of dumping ‘Mas’ or rotting fish
and other organic matter on the shore and in the lagoon.
The unfavorable pH alteration is detrimental in the long
run since the lagoon water tends to concentrate toxic
wastes as it is cut off from the open sea by a ring of
reefs.
9. Dumping of garbage like plastic, used and leaking
batteries, electric glass bulbs, bottles, cigarette cartons,
cans, etc., is prevalent on important nesting islands of
Pitti and Cherbaniani (Belapani Reef).
10. Recurring oil spills, even in small quantities, from
fishermen’s boats and tourist transport can cause
pollution in the long run.
11. A lack of regular monitoring of the nesting islands by
competent authorities of Lakshadweep Archipelago
and by Coast Guard has resulted in absence of fear in
the minds of fishermen who poach the eggs and birds
indiscriminately in spite of Pitti Island being
recognized as an Important Bird Area. However no legal
protection is accorded to this important island.
12. Stray incidents of poaching of marine fauna by Indian
and non-Indian tourists are reported.
13. A lack of knowledge of island and marine ecology and
a failure to understand the importance of this fragile
ecosystem, the importance of nesting bird colonies on
Pitti and Cherbaniani islands, the most important
breeding grounds of pelagic birds in Arabian Sea in
Indian territory—can be ascribed to administrative
apathy.
14. Poaching of eggs of marine turtles is known. Local
fishermen also kill marine turtles for oil, which is used
for painting boats for rendering them water resistant.
15. Armoring of coasts and cutting of indigenous
vegetation has led to a decrease in the availability of
sandy beaches for nesting marine turtles. This is
causing an irreversible damage to the fragile island
biogeography.
Recommendations
1. Cherbaniani (Belapani Reef), Byramgore, Suheli Pitti and
Pitti islands should be immediately declared Marine Birds
Sanctuaries. They should also be assessed IBAs. A strict
penalty should be levied if unauthorized persons are found
on these islands, especially during March and November.
Cherbaniani is the second most important breeding
ground for the pelagic birds of the Lakshadweep
archipelago, second only to Pitti Island (Table 2).
2. Regular surveillance and monitoring of bird
populations on Cherbaniani and Pitti islands should
be undertaken.
Sooty Tern Sterna fuscata at nest
Niranjan Sant
12 Indian Birds Vol. 3 No. 1 (January–February 2007)
3. No habitat modification on these islands should be
permitted and their status quo maintained without
starting any coconut or other plantations. If such
plantations are allowed on Pitti, Cherbaniani,
Byramgore and Suheli Pitti islands, the breeding birds
on Lakshadweep archipelago are very likey to vanish
in the next twenty five years.
4. Suheli Pitti, though devoid of pelagic bird nesting, is a
potential breeding ground of these birds. Entry of people
to Suheli Pitti should also be strictly prohibited.
Resumption of breeding by pelagic birds on this sand
bank is very likely to be occurring during the SW
monsoon.
5. The Coast Guard should physically patrol
Cherbaniani, Byramgore, Pitti and Suheli Pitti islands,
rather than simple distant patrolling. Unless the
personnel land on these islands in Gemini boats, true
status of pelagic birds cannot be evaluated since the
larger patrol vessels cannot approach close enough and
hence the bird life and other faunal monitoring or
exploitation will remain unknown.
6. Use of rodenticides like ‘Roban’, which contains zinc
compounds, should be strictly prohibited in
Lakshdweep. There is evidence of high percentage of
toxic zinc in soil samples and bio-magnification of this
pollutant is already occurring (Mathew et al. 1991).
This is definitely a cause for concern. The rodents live
on coconut palms and remain in the canopy throughout
their life; hence indiscriminate use of rodenticides on
ground is of doubtful efficacy. Other measures for rodent
control should be tried.
7. Disposal of fish ‘Mas’ and other vegetative waste like
coconut fronds should be correctly carried out in a safe
manner such that decomposition of these waste
products does not increase the pH of water or produce
any unfavorable alterations.
8. Creating public awareness on the importance of
Cherbaniani, Byramgore, Pitti and Suheli Pitti islands
in Lakshadweep’s ecology should be undertaken on a
priority basis. Administration should refrain fishermen
from visiting these islands and from poaching eggs,
killing birds and disposing toxic garbage on them.
9. Officers and crew of the Coast Guard should be involved
in a marine ecology orientation workshop wherein the
importance of marine ecosystem with respect to marine
birds, mammals, fish, reptiles, flora and other fauna is
highlighted in a simple manner. The immense role of
Coast Guard in the protection, conservation and
preservation of our natural but fragile marine wealth
should be highlighted, since this area is virtually out of
bounds to the common man.
Acknowledgements
We thank Vice Adm. M. P. Awati (Retd.), Director Ecological Society,
Pune for inspiring us to undertake the task that was so close to our
hearts and for being instrumental in arranging the survey. The
survey would not have been possible without his continued interest.
We thank Director General Indian Coast Guard, New Delhi;
Inspector General A. Rajasekhara, Comdt. Coast Guard Western
Hermit Crab Pagurus sp. predating on egg
Satish Pande
Lesser Crested Terns Sterna bengalensis
Satish Pande
Indian Birds Vol. 3 No. 1 (January–February 2007) 13
Region and also the Commander in Chief Western Naval Command
and Prakash Gole, Chairman of Ecological Society; for making this
expedition possible. We specially thank Comm. S. Paramesh CO
ICGS Annie Besant and his competent and helpful staff especially
Dy. Comm. Sujeet Dwivedi, Asst. Comm. Varun Upadhyaa and
chief diver Officer Mohanti for helping our team in every possible
manner. We sincerely thank ELA Foundation, Pune for making the
survey a success. We also thank Anil Mahabal of Zoological Survey
of India, WRS, Pune, for his suggestions.
References
Alcock, A. 1902. A naturalist in Indian seas. London: John Murray.
Ali, S. & Ripley, S. D. 1969. Handbook of the birds of India and Pakistan
together with those of Bangladesh, Nepal, Bhutan and Sri Lanka.
New Delhi: Oxford University Press.
Anon. 1970. White-bellied Storm-Petrels, Regetta grallaria, in north
Indian Ocean and Arabian Sea in the summer. Sea Swallow 20:
41–42.
Bailey, R. S., Pocklington, R. & Willis, P. R. 1968. Storm-petrels
Oceanodroma spp. In the Indian Ocean. Ibis 110: 27–34.
Betts, F. N. 1939. The birds of Laccadive Islands. J. Bombay Nat. Hist.
Soc. 40: 382–387.
Bhaskaran, S. T. 1985. Birding in Lakshadweep. Newsletter for
Birdwatchers 25 (11&12): 9–10.
Bourne, W. R. P. 1960. The petrels of the Indian Ocean. Sea Swallow
13: 26–39.
Bourne, W. R. P. 1989. Seabird reports received in 1987 and 1988.
Sea Swallow 38: 7–30.
Burton, R. W. 1940. A visit to Laccadive Islands. J. Bombay Nat. Hist.
Soc. 41: 489–513.
Chapman, S. E. 1984. Notes on seabird reports received 1983. Sea
Swallow 33: 12–21.
Daniels, R. J. R. 1992. Island biogeography and the birds of the
Lakshadweep Archipelago, Indian Ocean. J. Bombay Nat. Hist.
Soc. 88: 320–328.
Ellis, R. H. 1924. A short account of Laccadive Islands and Minicoy. P. R.
Madras Government Press.
Gadow, H. & Gardiner, S. 1903. Aves. Pp 368–373. In The fauna and
geography of the Maldive and Laccadive archipelagos. Cambridge:
Cambridge University Press.
Hume, A. O. 1876. The Laccadives and the west coast. Stray Feathers
4: 411–482.
Islam, M. Z. & Rahmani, A. R. 2004. Important Bird Areas in India:
Priority sites for conservation. Indian Bird Conservation Network:
Bombay Natural History Society and BirdLife International
(UK).
Kurup, D. K. N. & Zacharias, V. J. 1994. Birds of Lakshadweep
Islands. Forktail 10: 49–64.
Bat, L., Sezgin, M., Gundogdu, A. & Culha, M. 1999. Toxicity of
Zinc, Copper and Lead to Idotea baltica (Crustacea, Isopoda).
Trop. J. Biol. 23: 465–472.
Sooty Terns Sterna fuscata
Niranjan Sant
Guano collection at Cherbaniani Island
Satish Pande
14 Indian Birds Vol. 3 No. 1 (January–February 2007)
Livinsgton, P. 1987. Detection of tuna shoals from observations of sea
birds in the skipjack pole and line fishing of Lakshadweep. CMFRI
special publication 40. Abstracts 32, 30–31.
Mathew, D. N. & Ambedkar, V. C. 1964. A bird study trip to
Laccadive Islands. J. Bombay Nat. Hist. Soc. 61: 185–190.
Mathew, D. N., Gandhi, T., Santharam, V., Rajan, V. J. & Mathew,
G. 1991. Pitti Island, Lakshadweep. An Ornithological Study.
Madras: Madras Naturalists’ Society.
Menon, A. G. K. 1976. Marine Park in Lakshadweep. A report
submitted to the Department Science and Technology,
Government of India.
Mohan, R. S. L. 1989. Some observations on the marine mammals
and marine birds. CMFRI Bull. 43: 195–199.
Pande, S. 2005. The First Ocean Bird Survey and Coastal Bird Survey
in the Arabian Sea and the west coast of India from Mumbai to
New Mangalore. Pp. 1–36. (Unpubl. Report with colour
photographs, submitted to the Director General, Indian Coast
Guard).
Ramunni, M. 1962. An Atlas of Laccadive, Minicoy and Amnidive Islands.
Madras.
Ripley, S. D. 1982. A synopsis of the birds of India and Pakistan together
with those of Nepal, Sikkim, Bhutan and Ceylon. 2nd ed. Bombay;
Oxford: Bombay Natural History Society; Oxford University
Press.
Robertson, A. L. H. 1994. Occurrence of some pelagic seabirds
(Procellariiformes) in waters off the Indian Subcontinent. Forktail
10: 129–140.
Santharam, V., D. N. Mathew, G. M. & Gandhi, T. 1996. Recent
additions to the bird list of the Lakshadweep Islands. J. Bombay
Nat. Hist. Soc. 93: 95–97.
Subiah, K. S. 1978. Pied Crested Cuckoo in Lakshadweep. Hornbill
1978 (January–March): 2–3.
Watson, G. E., Zusi, R. L. & Storer, R. E. 1963. Preliminary field guide to
the birds of the Indian Ocean. For use during the International Indian
Ocean Expedition. Washington D.C.: Smithsonian Institution.
Juvenile Brown Noddy Anous stolidus
Niranjan Sant
A spray of Ruddy Turnstones Arenaria interpres
Satish Pande
... According to the recent checklists, 38 species from the order Charadriiformes were reported from the Lakshadweep islands (Aju et al., 2021). The reports of Mathew et al. (1991) and Kurup and Zacharias (1994) also recorded 35 species, and the expeditions conducted by Pande et al. (2007) reported 20 species of Charadriiformes. ...
... During the present survey, the breeding colonies the Sooty Tern Onychoprion fuscatus and Brown Noddy Anous stolidus were observed from the Pitti islands, and 167 eggs were counted from the Pitti islet. The number of eggs counted was comparatively less than the previous records of Pande et al., (2007) and Mondreti et al., (2018). According to Pande et al. (2007), the islet Pitti and Cheriyapani are considered as the breeding grounds for the tern species and Kurup and Zacharias (1994) observed the breeding activities of terns from Suheli island. ...
... The number of eggs counted was comparatively less than the previous records of Pande et al., (2007) and Mondreti et al., (2018). According to Pande et al. (2007), the islet Pitti and Cheriyapani are considered as the breeding grounds for the tern species and Kurup and Zacharias (1994) observed the breeding activities of terns from Suheli island. ...
Article
Full-text available
The birds belonging to the order Charadriiformes are widely distributed along the coastal regions and coastal waters of Kerala and Lakshadweep. Most species in this region are migratory and use the coastal habitats and coastal waters as their feeding grounds or stopover sites. In this study, we documented the diversity and distribution of Charadriiformes along the Kerala coast and Lakshadweep and recorded 47 species of birds. Among these, 22 species were recorded from the Kerala coast and the Lakshadweep islands. The abundance and distribution of the Charadriiformes have been examined, and the results show the distribution pattern between the mainland and the islands. On the Kerala coast, the population of three gull species and three sand plover species and in Lakshadweep islands, the population of three tern species and brown noddy determines the Charadriiformes abundance. The breeding colonies of Anous stolidus and Onychoprion fuscatus were observed during the study from the Pashi Pitti, Lakshadweep archipelago. While the distribution and diversity of birds will be used to measure the ecosystem's health, the results obtained from the current study will provide insight into coastal management and conservation of the avian fauna.
... Gent (2007) observed them occasionally on Tinnakara spit and sand bank, but not on Bangaram. Pande et al. (2007) also observed six of them on Cherbaniani. Hence, included in the checklist. ...
... Another two records were made by Chilman (RNBWS 2021): one in December 1967 (11.83ºN; 73ºE) north of Kiltan, and the other in November 1969 (12.75°N; 72°E) north of Cherbaniani Reef (Beleapani Reef). Pande et al. (2007) sighted one in Kavaratti Island's offshore waters. In 1988 Daniels (1992) also sighted it but failed to give its location. ...
... Analysis of historical observations made it clear that species such as Bridled Terns ceased to breed in the Lakshadweep. Pande et al. (2007) reported that Cherbaniani hosted breeding colonies of some tern species a decade ago. However, an analysis of satellite pictures from recent years revealed that Cherbaniani now lacks a sandbar that is well above the tidal line at least throughout the year that can reliably be used by the birds for breeding. ...
... Gent (2007) observed them occasionally on Tinnakara spit and sand bank, but not on Bangaram. Pande et al. (2007) also observed six of them on Cherbaniani. Hence, included in the checklist. ...
... Another two records were made by Chilman (RNBWS 2021): one in December 1967 (11.83ºN; 73ºE) north of Kiltan, and the other in November 1969 (12.75°N; 72°E) north of Cherbaniani Reef (Beleapani Reef). Pande et al. (2007) sighted one in Kavaratti Island's offshore waters. In 1988 Daniels (1992) also sighted it but failed to give its location. ...
... Analysis of historical observations made it clear that species such as Bridled Terns ceased to breed in the Lakshadweep. Pande et al. (2007) reported that Cherbaniani hosted breeding colonies of some tern species a decade ago. However, an analysis of satellite pictures from recent years revealed that Cherbaniani now lacks a sandbar that is well above the tidal line at least throughout the year that can reliably be used by the birds for breeding. ...
Article
Full-text available
A checklist of the birds of Lakshadweep Islands, comprising 145 possible species was pared down to 115 definite species based on various evidence such as specimens, photographs, and field descriptions. These islands are important in terms of valuable habitats, though small, that serve as a halting site for migratory species, and breeding sites for pelagic birds. They often host stragglers or nomadic birds, and exhausted migrants. A definitive checklist will aid in forming management and conservation plans for vulnerable ecosystems in these small atolls, and their dependent species.
... Earlier surveys reported 31 species of pelagic seabirds and shore birds in the Lakshadweep Islands (Kurup & Zacharias 1994, Robertson 1994, whereas in 2006 only eight pelagic and nine nonpelagic species were recorded (Pande et al. 2007). Nesting colonies of Sooty Terns Onychoprion fuscatus, Brown Noddies Anous stolidus, and Greater Crested Terns Thalasseus bergii have been reported on these islands over the past 100 years (Hume 1876, Betts 1939, Kurup & Zacharias 1994, Robertson 1994, Mathew et al. 1996. ...
... Nesting colonies of Sooty Terns Onychoprion fuscatus, Brown Noddies Anous stolidus, and Greater Crested Terns Thalasseus bergii have been reported on these islands over the past 100 years (Hume 1876, Betts 1939, Kurup & Zacharias 1994, Robertson 1994, Mathew et al. 1996. Currently, only Sooty Tern and Brown Noddy colonies have been reported and are localized to the islands of Cherbaniani and Pitti (Pande et al. 2007). Former breeding sites such as Tinnakara and Suheli are no longer used by the birds (Kurup & Zacharias 1994, Pande et al. 2007. ...
... Currently, only Sooty Tern and Brown Noddy colonies have been reported and are localized to the islands of Cherbaniani and Pitti (Pande et al. 2007). Former breeding sites such as Tinnakara and Suheli are no longer used by the birds (Kurup & Zacharias 1994, Pande et al. 2007. Land use change, especially conversion of nesting habitats to coconut plantations, likely affected nesting colonies during the early days of human occupation (Feare et al. 2007). ...
Article
Full-text available
We carried out population counts of a nesting colony of terns (Sternidae) on Pitti Island, an official seabird sanctuary, on 17 February 2013, 10 March 2013, and 10 February 2014. We also assessed population trends over previous years using data from earlier surveys. We estimated the number of nests and eggs, and recorded loss of eggs by predation, including harvesting by fishermen. Using a structured questionnaire, we interviewed 800 respondents from Kavaratti Island in the Lakshadweep Archipelago to assess the number of people involved in seabird egg harvesting and trade, and to evaluate their attitudes towards seabird conservation. We recorded three species of terns: Sooty Tern Onychoprion fuscatus, Brown Noddy Anous stolidus, and Greater Crested Tern Thalasseus bergii, but only Sooty Terns were nesting during our field visits. Levels of natural predation on this species were low (<1%), whereas fishermen removed 14%–45% of the eggs. Approximately 72% of the 800 respondents interviewed on Kavaratti Island were either directly or indirectly involved in the harvest and local trade of seabird eggs. Respondents involved in egg harvesting were significantly less inclined to support seabird conservation. Although Pitti Island is a protected area, tern numbers have declined since 1963. This key breeding site will likely be lost unless stringent conservation measures are implemented to monitor and protect the nesting colony, and to divert the local people away from the seabird egg trade.
... The high organic matter in soil may not be significantly contributed by the allochthonous nutrient sources such as the seaweeds and fish debris, rich in proteins and amino acids, that accumulate along the shores of the Islands. Though bird guano is another source of nutrients, this is drastically reduced because of coconut cultivation, increasing population and settlement area that have deterred the sea birds from nesting in the Islands (Pande et al., 2007;Young et al. 2009). ...
Article
Full-text available
The soils of Lakshadweep Islands are formed as a result of the fragmentation of coral limestone, that is carbonate-rich, with neutral pH, but poor in plant nutrients. Coconut palm (Cocos nucifera L.) is the main crop cultivated, supporting the life and livelihood of the islanders. No external fertilizer application or major plant protection measures are adopted for their cultivation as the Islands were declared to go organic decades back. Yet, Lakshadweep has one of the highest productivity of coconut compared with other coconut growing areas in India. Therefore, a question arises: how is such a high coconut productivity sustained? We try to answer by estimating in three main islands (i) the nutrients added to the soil via the litter generated by coconut palms and (ii) the role of soil microbiota, including arbuscular mycorrhizae, for the high productivity. Our results indicated that, besides adding a substantial quantum of organic carbon, twice the needed amount of nitrogen, extra 20% phosphorus to the already P-rich soils, 43–45% of potassium required by palms could be easily met by the total coconut biomass residues returned to the soil. Principal Component Analysis showed that soil organic carbon %, potassium, and organic carbon added via the palm litter and AM spore load scored >± 0.95 in PC1, whereas, available K in the soil, bacteria, actinomycetes, phosphate solubilizers and fluorescent pseudomonads scored above >± 0.95 in PC2. Based on our analysis, we suggest that the autochthonous nutrients added via the coconut biomass residues, recycled by the soil microbial communities, could be one of the main reasons for sustaining a high productivity of the coconut palms in Lakshadweep Islands, in the absence of any external fertilizer application, mimicking a semi-closed-loop forest ecosystem.
... Over 140 sea/shorebirds have been reported from these islands including one endangered species, Barau's Petrel (Pterodroma baraui), seven near-threatened species (Swinhoe's Storm Petrel, Oceanodroma monorhis; Jouanin's Petrel, Bulweria fallax; Black-tailed Godwit, Limosa limosa; Eurasian Curlew, Numenius arquata; Ferruginous Duck, Aythya nyroca; Pallid Harrier, Circus macrourus; and Lesser Flamingo, Phoeniconaias minor) and one vulnerable species (Great Knot, Calidris tenuirostris) (Avibase 2016). Sooty Tern (Sterna fuscata) and Brown Noddy (Anous stolidus) breeding have been reported from these islands (Pande et al. 2007). The Pitti island of Lakshadweep is inhabited by three species of terns, namely, the Noddy Tern (Anous stolidus pileatus), Sooty Tern (Sterna fuscata nubilosa) and the Brown-winged Tern (Sterna anaethetus). ...
Chapter
The wetlands of small island nations in South Asia such as Sri Lanka and the Maldives are compared with that of India with respect to their status, biodiversity, threats and conservation measures. Sri Lanka has diverse coastal habitats, which are known to support fishes (1800 species), marine turtles (5 species), marine mammals (38 species), corals (183 species), mangroves (40 species), birds (100 species), reptiles (33 species) and seagrasses (10 species). The Maldives boasts one of the world’s richest marine biodiversity comprising 250 species of corals, over 1200 of reef fishes, 200 species of sponges, over 1000 species of crustaceans and over 100 species of echinoderms. Marine biodiversity of India comprises 12,913 species, of which more than 5800 species are reported from Andaman and Nicobar Islands. Marine biodiversity of Lakshadweep islands is represented by corals (172 species), fishes (396), sponges (95), molluscs (260), echinoderms (84), crustaceans (80), turtles (04), birds (142), marine mammals (6), seagrasses (07) and mangroves (03). The major threats to these wetlands of South Asian countries are climate change, extreme events like tsunami, coastal erosion, population pressure, habitat destruction and over-exploitation. The chapter emphasises the need for adopting frontier tools for biodiversity documentation and innovative strategies for their conservation.
... During the present study in February 2018, not more than about 1000 Sooty Terns and about 400 Brown Noddies were seen. Collection of eggs by passing fishermen to unsustainable levels was one of the causes for concern cited by earlier studies (Anonymous 1991;Mathew, Mathew, and Gandhi 1996;Idrees Babu 2008) along with guano collection (Pande et al. 2007). The drastic reduction in the number of birds over the decades calls for the need for in-depth study on their ecology and dedicated conservation measures for preserving this important breeding site. ...
... It winters in suitable habitats more or less throughout the Subcontinent (Ali and Ripley 1987;Manakadan et al. 2011). Though it occurs in the Maldives and breeds in Kerala, the species has not been previously recorded in Lakshadweep (Kurup and Zacharias 1994;Pande et al. 2011;Prince 2011;Santharam et al. 1996). ...
Article
Full-text available
The Oriental Pratincole Glareola maldivarum is one of the three species of genus Glareola found in the Indian subcontinent (Rasmussen and Anderton 2012). Globally, it is resident and breeding in the Indomalayan to southeastern Palaearctic realms; ranging from the Indian subcontinent to East Mongolia, China, and parts of Japan; and wintering in parts of the Indomalayan and Australasian biogeographic realms (BirdLife International 2017).
Article
Full-text available
Marine environment of India consists of unique ecosystems are known for their aesthetic beauty and provides habitat for numerous biological species. Mangroves are unique ecosystem of tropics and sub-tropics which support naturally diverse groups of aquatic and terrestrial organisms. These ecosystems serves has a haven for many varieties of birds and other fauna. Several Islands of Karnataka is an excellent place to enjoy the seascape, the mangroves with waves wading at their roots, several water birds and the spectacular dusk. Marine organisms have some physical and special adaptations that are unique to their lifestyle. Many species of seabirds spend much of their time in and around the seawater that have special types of behavior. The practice of coastal regions by monitoring of marine flora and fauna is an important topic of study in the coastal zone of Karnataka, India forms a good baseline work for the assessment of human–animal interactions. The comprehensive catalogues can be prepared separately for the marine flora and the fauna in order to recognize priority areas for maintenance in the coastal and non- coastal regions of Karnataka, India.
Book
Full-text available
This book is an extension of Important Bird Areas of India describing 466 IBAs and published in 2004 by BNHS, Indian Bird Conservation Network. The book is a fine example of worldwide collaboration among organisations, state government and individuals. Paperback: 151 pages Publisher: Oxford University Press (August 12, 2013) Language: English ISBN-10: 0198092180 ISBN-13: 978-0198092186 Product Dimensions: 8.5 x 5.7 x 0.3 inches Shipping Weight: 9.9 ounces (View shipping rates and policies) Average Customer Review: Be the first to review this item Amazon Best Sellers Rank: #5,157,559 in Books (See Top 100 in Books)
Article
Full-text available
The acute toxicity of zinc, copper and lead to the marine invertebrate Idotea baltica (Crustacea, Isopoda) was evaluated by static bioassays, calculating the LT 50 (lethality time for 50%) for males and females. Survival time decreased with increasing concentrations of zinc, copper and lead. Zinc was more toxic to Idotea than copper and lead. Lead was the least toxic of the metals tested. Çinko, Bakır ve Kurşun'un Idotea baltica (Crustacea, Isopoda)'lara Toksisitesi Özet: Deniz omurgasızlarından Idotea baltica (Crustacea, Isopoda) kullanılarak çinko, bakır ve kurşunun akut toksisitesi statik biyolojik deneylerle ölçülmüş ve hem erkek hem de dişi bireyler için öldürücü zaman (LT 50) hesaplanmıştır. Hayatta kalma süreçleri, çinko, bakır ve kurşun konsantrasyonlarının artmasıyla azalmıştır. Çinko, bakır ve kurşundan daha toksik bulunmuştur. Denenen bu metallerden en az toksik olanı ise kurşundur. Anahtar Sözcükler: Çinko, bakır, kurşun, hayatta kalma süresi, öldürücü zaman, Idotea baltica, biyolojik deney.
Article
Both in the past and now, 14 species of landbirds and inland waterbirds appear to be residents. The larger islands have a larger number of these resident birds than the smaller. The species-area model predicts 9-20 species of resident landbirds and inland waterbirds on the entire archipelago. Habitat availablity seems to have determined the success of colonisation of the islands by birds. A few species of birds have been introduced. -from Author
Article
In the course of the International Indian Ocean Expedition two storm-petrels, thought to be Oceanodroma matsudairae and O. monorhis, were encountered in the western Indian Ocean in some numbers. Two specimens of each species were collected, monorhis in the Arabian Sea, matsudairae off N.W. Australia. O. matsudairae, which had not been recorded before from these waters, appeafed to be concentrated within 5° of the equator and the birds probably belonged to the spring-breeding population of Volcano Island. O. monorhis was found mostly in the Arabian Sea. Bulweria bulwerii, for which there was but one certain Indian Ocean record, was also encountered several times.
A bird study trip to Laccadive Islands
  • D N Mathew
  • V C Ambedkar
Mathew, D. N. & Ambedkar, V. C. 1964. A bird study trip to Laccadive Islands. J. Bombay Nat. Hist. Soc. 61: 185–190
The birds of Laccadive Islands
  • F N Betts
Betts, F. N. 1939. The birds of Laccadive Islands. J. Bombay Nat. Hist. Soc. 40: 382–387