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Publications
Publications (36)
Nest predation is typically the main cause of nest failure in forest understory birds; thus, identification of primary nest predators is key to understanding nest predation patterns. Furthermore, responses of predators are likely affected by vegetation structure, but predator responses to micro-scale habitat characteristics are largely unknown, esp...
A total of 20 individual Phylloscopus warblers in the ‘Blyth’s Leaf Warbler P. reguloides lineage’, caught for ringing in the non-breeding season in Thailand and Myanmar, were resolved via mtDNA assay as P. reguloides (seven individuals), Claudia’s Leaf Warbler P. claudiae (12) and Hartert’s Leaf Warbler P. goodsoni (one). As expected, P. claudiae...
Available habitat and hence the global population of the Endangered giant nuthatch Sitta magna , restricted to lower montane habitats of south-western China, eastern Myanmar and northern Thailand, remains poorly quantified. Thailand is the only portion of the species’ range for which there is a population estimate. To obtain a more precise estimate...
Understanding the movements and requirements of individual species within bird migration flyways is of crucial conservation importance, especially along the East Asian Flyway considering the immense human pressure on the environment and habitats. We attached satellite transmitters to females of four Chinese Sparrowhawks Accipiter soloensis and four...
The Japanese sparrowhawk Accipiter gularis is a small raptor that breeds in Northeast Asia. The species consists of the widespread and mostly migratory subspecies A. g. gularis that is common in East Asia, including Japan, and the resident and endangered subspecies A. g. iwasakii which inhabits the Ryukyu and Yaeyama Islands in Okinawa, southern Ja...
Roost-site quality can significantly affect the individual fitness of shorebirds, but roost sites remain poorly described for many threatened species on the East Asian–Australasian Flyway. We studied roost-site selection of the globally endangered Spotted Greenshank (Tringa guttifer) in the Inner Gulf of Thailand, an area which supports approximate...
Southeast Asian forest birds are threatened by the highest rate of tropical deforestation globally, but conservation efforts regionally have very limited information from which to make policy and management plans. To provide baseline data on nesting and nest success for forest birds from an intact forest, we monitored 1506 nests of 54 species durin...
Nest success of forest birds is typically low due to high rates of predation, but little is known regarding how different nest predators affect nest-site selection and nesting success, particularly in the tropics. We studied nest-site selection and nest success of the understory-nesting Scaly-crowned Babbler (Malacopteron cinereum) in a seasonal ev...
Road edges in the temperate zone often negatively affect reproductive success, post-fledging survival, and dispersal of forest birds through processes associated with edge habitats. This pattern is less clear in the tropics due to a lack of studies using natural nests and radio-tagged fledglings as well as an almost complete absence of information...
The Sakhalin Leaf Warbler Phylloscopus borealoides has only recently been confirmed as a frequent passage migrant and probable winter visitor
in South-East Asia, alongside the long-recognised Pale-legged Leaf Warbler P. tenellipes. The great morphological similarity of these two species
renders them very hard to distinguish either in the field or i...
.— It is often assumed that passerine birds conceal nests to reduce predation because nest predation is usually the primary cause of reproductive failure. We hypothesized that nesting success would be higher in nest cavities with more concealed entrances and therefore more likely chosen over less concealed cavities. We set 200 nest boxes in ∼100 te...
The non-breeding season distributions of some Phylloscopus warblers are poorly known due partly to the difficulties of field identification. We document the addition of Kamchatka Leaf Warbler Phylloscopus examinandus and Sakhalin Leaf Warbler P. borealoides to the avifauna of Thailand based on five individuals and 12 individuals respectively. All P...
The ecology of the hill partridges, comprising the genera Arborophila and the recently revived Tropicoperdix, is poorly known and field-based studies are required to increase our understanding and facilitate the development of conservation action plans. We examined the nesting ecology and nest site selection of the green-legged partridge (Tropicope...
On 5 December 2012 we observed a Yellow-throated Marten Martes flavigula and a Changeable Hawk Eagle Nisaetus cirrhatus feeding on a recently dead Red Muntjac Muntiacus muntjak in Huai Kha Khaeng Wildlife Sanctuary, western Thailand. It seems unlikely that the Marten had killed the deer. It perhaps came across the carcase shortly after it died, pos...
Using continuous video recording, we identified predation as the main cause of nest failure of understorey-nesting birds in an intact evergreen forest in northeastern Thailand. Our dataset of 87 predation events is the largest recorded in the tropics. The main predators were macaques (n = 38; 43.7%), nocturnal snakes (n = 19; 21.8%), non-raptorial...
Fleshy-fruited plants in tropical forests largely rely on vertebrate frugivores to disperse their seeds. Although this plant-animal interaction is typically considered a diffuse mutualism, it is fundamental as it provides the template on which tropical forest communities are structured. We applied a mutualistic network approach to investigate the r...
As tropical habitats continue to be cleared or degraded, obtaining basic information about the ecology of birds in intact habitats is essential for understanding their life histories. We studied the breeding biology of Orange-breasted Trogons (Harpactes oreskios) and Red-headed Trogons (H. erythrocephalus) in Khao Yai National Park in Thailand from...
Survival of tropical passerines is thought to be higher than those in northern temperate regions, but relatively few tropical
studies have addressed this issue, particularly in tropical Asia. We examined factors that may have influenced the survival
rate of a cooperatively breeding bird, the puff-throated bulbul (Alophoixus pallidus), in an evergre...
The 169 species of birds recorded on the 30 ha Mo Singto Forest Dynamics Plot, Khao Yai National Park, Thailand, are a subset of the 329 species recorded in the headquarters area of the park. Most of the Mo Singto-recorded species are typical of evergreen forest interior but the transient occurrence of a small number of other species, inhabitants o...
We found the first documented wild nest of a Coral-billed Ground Cuckoo (Carpococcyx renauldi) at Khao Yai National Park, Thailand in June 2007. The large stick nest was monitored for 24 days including 1095 hrs of video footage; it contained two eggs and was in dense vegetation 4.85 m above the ground. Nest attentiveness of adults was almost consta...
Baseline demographic data are lacking for most tropical forest birds, particularly from undisturbed habitats. During the 2003 breeding season, we documented the productivity of Abbott's Babbler (Malacocincla abbotti), a sedentary insectivorous passerine, on a 30-ha permanent forest plot in northeastern Thailand. We found 17 active nests of 13 breed...
I describe for the fi rst time observations on the nest, breeding and moult of the Grey-eyed Bulbul, Iola propinqua, a common species in evergreen forests of central Thailand. In 2007, two active nests were found and monitored at Khao Yai National Park. Only females built the nest and incubated eggs while the male assisted the female to provision n...
The Asian Golden Weaver (Ploceus hypoxanthus) Occurs in Myanmar, Thailand, Laos, Vietnam, Cambodia, and Indonesia and inhabits marshes, grasslands, reeds and rice fields close to water in the lowlands (Robson 2000) and natural waterholes in lowland dry dipterocarp forest (Round 1998). It is globally 'Near-threatened' due to habitat loss through the...
Studies of birds involving colour ringing can provide much detailed information concerning bird movements and behaviour without the need for recapture. However, a fundamental premise of colour ringing, and indeed all ringing studies, is that the rings applied should neither cause harm to the birds concerned nor alter their behaviour or survival. Co...
A variety of photographic methods have been described for monitoring nest predation. All have limitations for studying active nests in remote situations, such as size, expense, volume of data recorded, and types of trigger mechanisms. We developed a digital video surveillance system using infrared cameras to monitor predation at bird nests. The mai...
Two white-eyes caught and banded at Mo-singto, Khao Yai National Park (14°26'N, 101°22'E) on 14 July 2004 at 728 m were identified as Everett's White-eye Zosterops everetti. This provides the first confirmed evidence of the presence of this species in north-east Thailand, and is a significant extension of the species's known range, which was previo...
Cooperative breeding in birds is known from less than 3% of all species although this number is increasing as more detailed studies are undertaken. During a study of Puff-throated Bulbul Alophoixus pallidus at Khao Yai National Park, Thailand, three nests were found in which at least three individuals provisioned the nestlings. We suspect that this...
Interspecific feeding among birds is uncommon and unusual in that it confers no obvious selective advantage to the feeder. Most reported examples of this behaviour come from the Americas or Europe (Skutch 1961, Shy 1982). Here I report on an adult Little Spiderhunter (Arachnothera longirostra) feeding a fledgling White-eye (Zosterops sp.) in Thaila...