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Fiji’s collared kingfishers (Todiramphus chloris vitensis) do hunt for fish in inland waters

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Abstract

According to the major texts on Fiji’s birds, fish are considered to form only a small part of the collared kingfisher’s diet, and it appears that when fish are taken, this is only in mangroves and beachpools. This article describes systematic fishing by collared kingfishers in a deep inland freshwater body.
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The collared kingsher (Todiramphus chloris) is
a widespread species occurring from Ethiopia,
Oman and India through South-east Asia, northern
Australia to the Pacic with 49 subspecies currently
recognised (Woodall 2001). Fry et al. (1992) and
Woodall (2001) note that, where the collared
kingsher overlaps with other halcyon kingsher
species, it is primarily a bird of coastal and mangrove
areas but can range inland in places where it is the
only kingsher species. However, Dutson (2011)
notes it occurs alongside other tree kingshers in
inland parts of the Solomon Is.
In Fiji, the collared kingsher (locally known
as the white-collared kingsher) is the only
kingsher species, and it occurs in both coastal and
inland environments (Watling 2001). The 3 Fijian
subspecies, including T. c. vitensis on Viti Levu, are
sometimes placed within the sacred kingsher (T.
sanctus) group (Pra et al. 1987; Woodall 2001).
According to the major texts on Fiji’s birds,
sh are considered to form only a small part of
the collared kingsher’s diet, and it appears that
when sh are taken, this is only in mangroves and
beachpools. For instance, Watling (2001, p. 137) states
the collared kingsher feeds “predominantly on
large insects such as grasshoppers and crickets, also
lizards, young birds and crabs” and that “sh are
only very occasionally taken - from mangroves and
reef pools”. Ryan (2000) found collared kingshers to
feed primarily on insects, while Belcher and Sibson
(1972, p. 20) state that “sh form but a small part of
its diet which normally includes large insects, crabs,
skinks and geckos and sometimes even small birds”
and suggest the kingsher “should more correctly
be termed ‘kinghunter’, as it is rarely observed
to dive into streams or pools”. Similarly, Clunie
(2007, p. 68) lists insects, worms, crabs, lizards, and
bird’s eggs and nestlings as the diet for the collared
kingsher in Fiji, although notes the species also
“dives for sh and prawns”. Mercer (1966) lists
lizards and grasshoppers as favoured prey but
notes small crabs and nestlings also are taken.
On Tonga, Steadman and Freifeld (1998) suggest
the collared kingsher feeds primarily on large
insects and small lizards, although occasionally
small sh are caught on the reef at low tide. The
reported lack of sh in the diet of kingshers in
SHORT NOTE
Notornis, 2011, Vol. 58: 163-164
0029-4470 © The Ornithological Society of New Zealand, Inc.
Received 27 Sep 2011; accepted 9 Nov 2011
*Correspondence: james.simons@deakin.edu.au
Fiji’s collared kingshers (Todiramphus chloris vitensis) do hunt for
sh in inland waters
JAMES A. FITZSIMONS*
School of Life and Environmental Sciences, Deakin University, 221 Burwood Highway, Burwood VIC 3125,
Australia; The Nature Conservancy, Suite 3-04, 60 Leicester Street, Carlton VIC 3053, Australia
JANELLE L. THOMAS
Birds Australia, Suite 2-05, 60 Leicester Street, Carlton VIC 3053, Australia
164
inland habitats appears to reect the published
literature for the species elsewhere in its wide
distribution. For example, Fry et al. (1992, and
repeated in Woodall 2001) states that mangrove
and coastal populations of collared kingshers take
mainly small crabs, shrimps, mudskippers and other
small sh, but inland, the species feeds on cicadas,
beetles, carpenter bees, wasps, grasshoppers,
earthworms, snails, land crabs, spiders, frogs and
snakes, and less commonly, mice, and the eggs
and nestlings of small birds. A total of 54 prey
items identied in a collared kingsher in Vanuatu
comprised equal numbers of skinks, locusts and
beach-pool sh, 8 bueries and other insects and a
crab (Fry et al. 1992).
On each day of 1-5 Jun 2011, we observed 2
collared kingshers actively shing daily in an
inland fresh water-body in Fiji. The site was a 50 m
deep freshwater lake formed from a former quarry
at the Raintree Lodge, Colo-i-Suva (18° 02’ 10” S,
178° 27’ 57” E) on the island of Viti Levu. The lake
is 240 m a.s.l., ~8.5 km from the nearest coast, and
is fringed by rainforest (eectively adjoining the
Colo-i-Suva Forest Park). On 2 Jun, between 1450-
1515 h we observed the 2 kingshers make 11
aempts to catch sh of which 6 were successful.
The prey captured on each occasion was a small
tilapia (Orechromis sp.), with most about the size of
the bird’s bill (i.e., ~5 cm). The lake was well stocked
with this sh.
On 3 occasions, the sh was struck on the branch
between 9-11 times and then consumed. On 2 of
these occasions the sh appeared to be swallowed
but was then regurgitated where it was struck a few
more times. Tail fanning and icking, and forward
and backward movement of the head were observed
while the birds were watching for prey, but also
while beating and consuming sh.
Over the 5 days, 2 dierent foraging behaviours
were observed. The 1st involved perching on a
branch overhanging the water ~4 m high and
diving at sh within a few metres of the branch.
The 2nd foraging behaviour involved ying from
the lake edge out to ~20 m, diving, and then ying
back. When successful, sh were taken from the
surface of the water with the bill and sometimes
head submerged, but diving below the water was
not observed. The foraging methods observed were
consistent with what has been previously reported
for the species shing in coastal environments; for
example, Woodall (2001) reports most prey taken
within 30 m of perch sites in Peninsular Malaysia.
Although Watling (2001, p. 137) suggests that the
collared kingsher “is often mobbed by small birds
but pays lile aention to them”, we observed a
Vanikoro ycatcher (Myiagra vanikorensis) harassing
and displacing a kingsher from its vantage perch
while searching for prey.
The observations described provide new
information on diet and foraging strategies of the
collared kingsher. According to the literature, sh
do not appear to be recorded in the diet of collared
kingshers occupying inland habitats. Further,
where shing does occur in coastal environments
it is within shallow waters (e.g., reef pools); the
freshwater environment in our observations was a
deep lake in a disused quarry. The birds at Colo-
i-Suva were observed consistently hunting on the
lake with sh being the only observed target on all
days during our visit. This suggests that at least
some collared kingshers feed on sh in inland
waters in the Pacic region.
ACKNOWLEDGEMENTS
Thanks to Dick Watling, Guy Dutson, and an anonymous
referee for comments on a draft.
LITERATURE CITED
Belcher, W.J.; Sibson, R.B. 1972. Birds of Fiji in colour.
Auckland: William Collins.
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Dutson, G. 2011. Birds of Melanesia: Bismarks, Solomons,
Vanuatu and New Caledonia. London: A & C Black.
Fry, C.H.; Fry, K.; Harris, A. 1992. Kingshers, bee-eaters and
rollers. London: Christopher Helm.
Mercer, R. 1966. A eld guide to Fiji birds. Fiji Museum
Special Publication Series No. 1. Suva: Fiji Museum.
Pra, H.; Bruner, P.; Berre, D. 1987. The birds of Hawaii
and the Tropical Pacic. Princeton: Princeton University
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Ryan, P. 2000. Fiji’s natural heritage. Auckland: Exisle
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the Vava’u Group, Kingdom of Tonga. Condor 100:
609-628.
Watling, D. 2001. A guide to the birds of Fiji and Western
Polynesia including American Samoa, Niue, Samoa,
Tokelau, Tonga, Tuvalu and Wallis & Futuna. Suva:
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Woodall, P. 2001. Family Alcedinidae (Kingshers).
pp. 103–187 In: del Hoyo, J.; Ellio, A.; Sargatal, J. (eds)
Handbook of the birds of the world. Volume 6, mousebirds
to hornbills. Barcelona: Lynx Edicions.
Keywords collared kingsher; Fiji; sh; inland waters;
tilapia; foraging
Short note
... The literature reveals a little information about mangrove kingfisher's life history. Researchers have studied a few anatomical, physiological and ecological attributes-the DNA barcoding, hunting method, population status and decline due to alien intruders, cooperative nesting molecular phylogeny niche partitioning-of mangrove kingfisher outside Bangladesh (Luczon et al. 2010, Fitzsimons et al. 2011, Pereira 2013, Beckon 1987, Campbell 2013, Anderson et al. 2015, Borah et al. 2012. No study has been done on the feeding and breeding ecology of mangrove kingfishers in Bangladesh. ...
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We assessed the distribution, relative abundance, and habitat preferences of the 12 indigenous, resident species of landbirds that survive in the Vava' u Group, Kingdom of Tonga. We surveyed 16 islands, 10 of which are previously unmentioned in ornithological literature. The islands vary in land area (0.02-96 kn?), habitat composition, elevation (20-215 m), and distance (O-lo.1 km) from the largest island of ' Uta Vavdu. We conducted point counts along transects on 14 of the islands, and placed each count location into one of five habitat categories. Of the 11 species of landbirds that are widespread and at least locally common, 7 (Purple-capped Fruit-Dove Ptilinopus porphyraceus, Pacific Pigeon Du-cula pacijca, Common Barn-Owl Tyto alba, White-rumped Swiftlet Collocalia spodiopygia, Collared Kingfisher Halcyon chloris, Polynesian Tiiller Lalage maculosa, Polynesian Star-ling Aplonis tabuensis) certainly or probably occur on each of the 16 islands. One species (West Polynesian Ground-Dove Gallicolumba stairii) is extremely rare (one small population on one island). Three species that we did not record (Many-colored Fruit-Dove Ptilinopus perousii, Blue-crowned Lorikeet Vini australis, Fiji Shrikebill Clytorhynchus vitiensis) prob-ably have been extirpated from Vava' u. The species richness and relative abundance of landbirds on islands in Vava' u are affected more by deforestation and other human activities than by island area, elevation, or isolation.
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