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INDONESIA
KUKILA
Published by Indonesian Ornithology
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
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Articles 6 Documents
 1 
Search results for , issue "Vol. 21 (2018)" : 6 Documents clear
The Urban Avifauna of Kuching, Borneo, and the possible impact of cats on its structure Arleen Hong; Jayasilan Mohd-Azlan
KUKILA Vol. 21 (2018)
Publisher : Indonesian Ornithologists’ Union

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Abstract

Urban landscapes have depauperate avifaunas, but there have been few studies of urban bird communities in Southeast Asia. Domestic cats can attain very high densities in urban environments, and are known to have detrimental effects on local avian assemblages. The aim of this study was to describe the urban bird assemblage of Kuching, an equatorial city in Borneo, and to investigate its potential relationship with the abundance of cats. The density of birds and domestic cats was examined in ten discrete urban areas from November 2014 to April 2015 using line transects. A total of 1,844 bird observations were made, involving 27 species. Bird species richness and diversity were negatively related to cat density (R2 = 0.41 and 0.43, respectively), but cat density did not significantly affect bird density (R2 = 0.032). Bird species richness was strongly correlated with the size of urban areas (R2 = 0.76, P = 0.001) suggesting that larger areas offer additional habitat or niches (e.g. street trees, parks, waterways), which in turn support more species. Reduction of habitat heterogeneity and type of surrounding matrix, as well as the presence of abundant introduced predators may play important roles in structuring the composition and population dynamics of this urban bird community. Urban areas do have some biodiversity conservation value, but the challenge is to enhance this value through better planning.
A second breeding record of Chestnut-naped Forktails Enicurus ruficapillus in Sumatra, and observations suggesting females alone incubate Muhammad Nazri Janra; Richard Noske; Ada Chornelia; Heru Handika; Ahmad Mursyid; Ade P Agung; Andri Saputra
KUKILA Vol. 21 (2018)
Publisher : Indonesian Ornithologists’ Union

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Breeding season of the Endangered White (Umbrella) Cockatoo, and possible competition for nest holes with Blyth’s (Papuan) Hornbill in North Maluku, Indonesia Irfan Rosyadi; Jihad S. Udin; Richard A. Noske; Mahroji Mahroji
KUKILA Vol. 21 (2018)
Publisher : Indonesian Ornithologists’ Union

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Abstract

The White Cockatoo Cacatua alba is endemic to the North Molucca islands and is considered Endangered mostly due to unsustainable levels of trapping for the pet trade. Little is known about its breeding biology in the wild, except that it nests in tall trees during the early part of the year. We made brief observations of two active nests of White Cockatoos on Halmahera and another on Ternate in February and March 2014, and estimate the egg laying dates of two of these nests as mid-October and mid-November. Combined with other data, the breeding season appears to extend from October to May or June. All three nests were visited by Blyth’s Hornbills Rhyticeros plicatus, a species which occurs throughout North Maluku, as well as New Guinea. One nest was subsequently abandoned. In September and November 2014, we observed two active nest cavities of hornbills, one of which was inspected by a cockatoo, and the other, approached closely by cockatoos. Both hornbill nests were reported to have been used previously by White Cockatoos, suggesting that the two species may either share or compete for the same nest cavities. Sharing of cavities may be facilitated by partly non-overlapping breeding seasons, as Blyth’s Hornbill reportedly lays eggs from August to October in the region. However, as the nest cycle of both species is c.4 months, it is possible that early nesting pairs of one species may attempt to usurp nest cavities occupied by the other species. The potential for nest competition may be exacerbated on small islands where deforestation has reduced the number of nest cavities available for hole-nesting species.
First Record of Bare-headed Laughingthrush Garrulax calvus in Kalimantan, Indonesian Borneo Ryan C Burner; Andrew Siani; Chandradewana Boer
KUKILA Vol. 21 (2018)
Publisher : Indonesian Ornithologists’ Union

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Ongoing illicit trade of Sumatran Laughingthrush Garrulax bicolor: one-year market monitoring in Medan, North Sumatra Tomáš Bušina; Nursahara Pasaribu; Marek Kouba
KUKILA Vol. 21 (2018)
Publisher : Indonesian Ornithologists’ Union

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Abstract

Many Indonesian birds are severely threatened or already at the brink of extinction due to the flourishing illicit bird trade. One such species is the Sumatran Laughingthrush Garrulax bicolor, endemic to Sumatra. From March 2015 to February 2016 we assessed the extent of trade of Sumatran Laughingthrushes by recording monthly turnovers from the six most prominent bird vendors in Medan’s Jalan Bintang market. In total, 2610 wild-caught individuals were traded, despite a considerable decline in market supply over the year. Total market mortality reached 16%. Mortality varied significantly during the year but was not dependent on the number of traded individuals each month. Monitoring revealed that the most frequently harvested localities were located in Aceh, North and West Sumatra and Riau province. Since the current estimate of the maximum population size of the species in the wild is 10,000 mature individuals, the level of trade is clearly unsustainable, and if not stopped, could lead to its extinction in near future.
First record of Long-billed Dowitcher Limnodromus scolopaceus for Papua Province Andrew C Crossland; Sule A Sinambela
KUKILA Vol. 21 (2018)
Publisher : Indonesian Ornithologists’ Union

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