About: Cambodian laughingthrush is a research topic. Over the lifetime, 2 publications have been published within this topic receiving 75 citations. The topic is also known as: Garrulax ferrarius.
TL;DR: The Chestnut-headed Partridge intermediate between the two known subspecies A. c. cambodiana and A.c. diversa was found to be distinctive enough to be described as a new subspecies.
Abstract: As part of a wider exploration effort to determine the biological importance of the Cardamom Mountains, Cambodia, and to identify priority species and habitats for conservation, we undertook fieldwork on two hitherto unexplored mountains in the Mount Samkos Wildlife Sanctuary during February and March 2000. During the survey a total of 166 bird species were recorded either by trapping or direct observation, including two threatened species (Chestnut-headed Partridge Arborophila cambodiana and Green Peafowl Pavo cristatus) and 15 species new for Cambodia. In total, 52 skins, one wing, 28 complete and 35 incomplete alcohol specimens and 35 tissue samples were collected. This collection contains two specimens of the Chestnut-headed Partridge intermediate between the two known subspecies A. c. cambodiana and A. c. diversa and therefore distinctive enough to be described as a new subspecies. In comparison with the Da Lat Plateau EBA in Vietnam, the same bird-feeding guilds were present, although represented by fewer genera. The geographic factors most likely to have led to the evolution of a depauperate avifauna in the Cardamom Mountains are their isolation from other ranges in Indochina, their relatively low height, and the small overall area of habitat above 1,500 m. Nevertheless, the occurrence of two restricted-range species (Chestnut-headed Partridge and Cambodian Laughingthrush Garrulax ferrarius) in the Cardamom Mountains means the Thailand-Cambodia Mountains Secondary Area (s085) does now meet the minimum criteria for an EBA and the area should be considered to be of elevated conservation concern. However, within an Indochinese context the Cardamom Mountains cannot be considered to be a major centre of bird endemism.
TL;DR: Application of a scoring system that grades morphological and vocal differences between allopatric taxa of the Asian babblers results in the recognition of 44 species previously, usually or still occasionally accorded subspecific status, and a new genus, Robsonius, is erected.
Abstract: Application of a scoring system that grades morphological and vocal differences between allopatric taxa (major character 3, medium 2, minor 1; minimum 7 for species status, with none permitted on minor differences alone) of the Asian babblers (Timaliidae) results in the recognition of 44 species previously, usually or still occasionally accorded subspecific status: Rufous-crowned Laughingthrush Garrulax ruficeps, Sumatran Laughingthrush G. bicolor, Bare-headed Laughingthrush G. calvus, Cambodian Laughingthrush G. ferrarius, Rufouscheeked Laughingthrush G. castanotis, Blue-crowned Laughingthrush G. courtoisi, Rufous-vented Laughingthrush G. gularis, Buffy Laughingthrush G. berthemyi, Orange-breasted Laughingthrush G. annamensis, Taiwan Hwamei G. taewanus, Bhutan Laughingthrush G. imbricatus, Assam Laughingthrush G. chrysopterus, Silver-eared Laughingthrush G. melanostigma, Golden-winged Laughingthrush G. ngoclinhensis, Malayan Laughingthrush G. peninsulae, Black-streaked Scimitar Babbler Pomatorhinus gravivox, Spot-breasted Scimitar Babbler P. mcclellandi, Grey-sided Scimitar Babbler P. swinhoei, Sri Lanka Scimitar Babbler P. melanurus, Taiwan Scimitar Babbler P. musicus, Sumatran Wren Babbler Rimator albostriatus, White-throated Wren Babbler R. pasquieri, Grey-banded Babbler Napothera sorsogonensis, Taiwan Wren Babbler Pnoepyga formosana, Rusty-throated Wren Babbler Spelaeornis badeigularis, Grey-bellied Wren Babbler S. reptatus, Chin Hills Wren Babbler S. oatesi, Pale-throated Wren Babbler S. kinneari, Chevron-breasted Babbler Sphenocichla roberti, Visayan Pygmy Babbler Stachyris pygmaea, Bold-striped Tit Babbler Macronous bornensis, Mindanao Miniature Babbler Micromacronus sordidus, Vietnamese Cutia Cutia legalleni, Collared Babbler Gampsorhynchus torquatus, Black-crowned Fulvetta Alcippe klossi, Indochinese Fulvetta A. danisi, Streak-throated Fulvetta A. manipurensis, Taiwan Fulvetta A. formosana, Black-browed Fulvetta A. grotei, Black-headed Sibia Heterophasia desgodinsi, Indochinese Yuhina Yuhina torqueola, Chestnut-crested Yuhina Y. everetti, Burmese Yuhina Y. humilis and Black-headed Parrotbill Paradoxornis margaritae. Scores for two taxa suggested as possible new species, ‘Afghan Babbler’ Turdoides (caudatus) huttoni and ‘Mount Victoria Babax’ Babax (lanceolatus) woodi, fall short, ‘Deignan’s Babbler’ Stachyris rodolphei is provisionally placed in the synonymy of S. rufifrons owing to overlap of diagnostic characters, and a new genus, Robsonius, is erected for Napothera rabori and N. sorsogonensis of the Philippines based on no rictal bristles, part-feathered nares, broad white tips to wing-coverts and outer primaries, copious rump feathering, insect-like call and walking habit. Taiwan gains seven new endemic species, Vietnam six, China five, Philippines three (and an endemic genus), Cambodia one, Sri Lanka one, Myanmar one, Sumatra two, the Eastern Himalayas EBA two, Peninsular Malaysia one, and Thailand minus one. The tiny population of Garrulax courtoisi and massive trade in G. bicolor make these ‘new’ species the highest priority for conservation action, but several other new splits have small ranges and all require conservation status review.