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MONITORING of Cacatua sulphurea abbotti POPULATION IN MASAKAMBING ISLAND, INDONESIA Dudi Nandika; Yeni Aryati Mulyani; Dewi Malia Prawiradilaga; Dwi Agustina
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 27 No. 3 (2020): BIOTROPIA Vol. 27 No. 3 December 2020
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (972.579 KB) | DOI: 10.11598/btb.0.0.0.1229

Abstract

The Critically Endangered Cacatua sulphurea abbotti is a unique subspecies of cockatoo, endemic to a single tiny Masakambing Island in Indonesia. Data procurement on the status and distribution of their wild population is necessarily urgent in order to determine the best conservation strategy for this species. Data were collected annually from 2008-2018 by a direct roost count method in a roosting tree. Only 10 cockatoos were recorded in 2008, but the number continually increased up to 22 birds in 2018 (42.86% increase in a decade). The population was distributed in about 71% of the total size of the island, concentrated in the north-western part with a density of 1.56 (~ 2 birds/km2) in 2008 which raised up to 3.44 (~ 3 birds/km2) in 2018. The zero trapping policy enforced by the local government was probably effective in preventing the population decline, although the population is still vulnerable due to nesting failure, presumably low genetic quality and habitat destruction. 
BIRDS OF HALIMUN-SALAK NATIONAL PARK, WEST JAVA, INDONESIA: ENDEMISM, CONSERVATION AND THREATENED STATUS Dewi Malia Prawiradilaga
TREUBIA Vol 43 (2016): Vol. 43, December 2016
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/treubia.v43i0.2971

Abstract

Bird surveys and long-term bird monitoring in Gunung Halimun-Salak National Park were conducted between 1998 and 2009 to obtain comprehensive data on the bird species in the area. Compilation of bird data from this study and other studies have recorded a total of 271 species, which is about 53.4% of all Javan birds (507 species) or 16.9% of all Indonesian birds (1605 species). As an important bird area, Gunung Halimun-Salak National Park is home to 43 Indonesian and Javan endemic species. Among the endemics, 32 species are restricted range species. Gaps in the protection status of the bird species are discussed. The results of this study show that Gunung Halimun-Salak National Park has the highest richness of bird species in the Java-Bali region and the conservation of its endemic and threatened species should be given main priority.
MORPHOMETRIC AND MOLT OF THE CRESCENT-CHESTED BABBLER (STACHYRIS MELANOTHORAX) IN CISARUA FOREST, WEST JAVA Fransisca Noni Tirtaningtyas; Yeni Aryati Mulyani; Dewi Malia Prawiradilaga; Joseph Adiguna Hutabarat; Iis Sabahudin
TREUBIA Vol 43 (2016): Vol. 43, December 2016
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/treubia.v43i0.2972

Abstract

Crescent-chested Babbler is endemic to the island of Java and Bali, Indonesia and protected by the Indonesian Government Regulation No. 7/ 1999. Its population is suspected to be declining due to ongoing habitat destruction and fragmentation. Information on its eco-biology is very poorly known. There is a need to obtain the information in order to conserve this species and its habitat. Morphometric and molt stages were recorded from 23 individuals captured by mist-nets between February and April 2016. There were variations in morphometric measurement in weight, head bill length, wing length and tail length in Cisarua Forest habitat, but no significant difference was found (F2.19 = 0.822, P> 0.05) in body weight among the three different habitats. This habitat has sufficient resource for Crescent-crested Babbler for molt activity during the study.
NEW AND SIGNIFICANT ISLAND RECORDS, RANGE EXTENSIONS AND ELEVATIONAL EXTENSIONS OF BIRDS IN EASTERN SULAWESI, ITS NEARBY SATELLITES, AND TERNATE Frank E Rheindt; Dewi Malia Prawiradilaga; Suparno Suparno; Hidayat Ashari; Peter R Wilton
TREUBIA Vol 41 (2014): Vol. 41, December 2014
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/treubia.v41i0.458

Abstract

The Wallacean Region continues to be widely unexplored even in such relatively well-known animal groups as birds (Aves). We report on the results of an ornithological expedition from late Nov 2013 through early Jan 2014 to eastern Sulawesi and a number of satellite islands (Togian, Peleng, Taliabu) as well as Ternate. The expedition targeted and succeeded with the collection of 7–10 bird taxa previously documented by us and other researchers but still undescribed to science. In this contribution, we provide details on numerous first records of bird species outside their previously known geographic or elevational ranges observed or otherwise recorded during this expedition. We also document what appears to be a genuinely new taxon, possibly at the species level of kingfisher from Sulawesi that has been overlooked by previous ornithologists. Our results underscore our fragmentary knowledge of the composition of the avifauna of eastern Indonesia, and demonstrate that there continues to be a high degree of cryptic, undescribed avian diversity on these islands more than a century and a half after they were visited by Alfred Russel Wallace and other collectors.