Bezuijen M.R.,P.O. Box 183 |
Eaton J.A.,17 Keats Avenue |
Gidean,11119 Hnin Si Road |
Hutchinson R.O.,26 Sutton Avenue |
Rheindt F.E.,Harvard University
Forktail | Year: 2010
The first published bird records in 97 years are presented for Kalaw, a site in eastern Myanmar, and compared with historical records collected 97-114 years previously. Recent (2005-2009) records for Kalaw include one globally threatened genus (Gyps vulture sp.), at least seven new distributional records and one new breeding record for East Myanmar, and two new altitudinal records for South-East Asia. Historical (1895-1912) Kalaw records include four globally threatened species and one new distributional record for East Myanmar. Kalaw retains the majority of bird species documented historically, but four species may now be locally extirpated (Mrs Hume's Pheasant Syrmaticus humiae, Black Kite Milvus migrans, Red-headed Vulture Sarcogyps calvus, Giant Nuthatch Sitta magna) and at least one other (Large-billed Crow Corvus macrorhynchos) may have declined. Over the past century, House Crow Corvus splendens and Eurasian Tree Sparrow Passer montanus have colonised Kalaw. A small but growing number of birdwatching tourists are visiting Kalaw which, together with some nearby sites, has probably received more recent bird survey effort than any other site in East Myanmar.
Collar N.J.,BirdLife International |
Collar N.J.,Bird Group |
Eaton J.A.,A 3A 5 Casa Indah I |
Hutchinson R.O.,26 Sutton Avenue
Forktail | Year: 2013
The Golden Bulbul Thapsinillas affinis of the Moluccan islands, Sula archipelago, Banggai islands, Togian islands and Sangihe, Indonesia, was until recently treated in Alophoixus before being placed in the resurrected genus Thapsinillas and shortly afterwards split into Northern and Southern Golden Bulbuls T. affinis and T. longirostris, but with a general consensus that a break-up into more species was required. We used plumage and morphometric analysis of museum specimens, supplemented by vocal samples, to determine where new species limits might be drawn. We found that the nine generally accepted subspecies break down into seven full species, five monotypic and two with two subspecies each: T. chloris on Morotai, Halmahera and Bacan (small, featureless; undifferentiated olive-green lores and ear-coverts, blackish base to submoustachial area; song reportedly a 'jumbled babbling'); T. lucasi on Obi (round yellow lores, yellow-tinged ear-coverts, seemingly simple often squeaky-toy-like vocalisations); T. affinis on Seram with race flavicaudus on Ambon (larger than previous two, with half-wedge yellow lores, broad yellow tips to tail, song a group of strong rich flat whistles); T. mysticalis on Buru (half-wedge yellow lores, partial yellow eye-ring, olive-green underparts, olive-grey tail, whistled phrases recalling domestic canary); T. longirostris on Sula with race harterti on Peleng and Banggai (longest-billed, large, undifferentiated olive-green lores, song a loud jumble); T. aurea on the Togian islands (golden-yellow underparts, vague half-wedge yellow lores, blackish frontal supercilial line, yellow-tinged rump, song seemingly more complex than in longirostris) and T. platenae on Sangihe (vivid yellow chin and submoustachial area to throat and breast, bright yellow triangular lores, almost-complete yellow eye-ring, song seemingly simple and nasal). Comprehensive vocal sampling and molecular work may shed light on the origins and colonisation routes of this geographically unusual cluster of species.
Rasmussen P.C.,Michigan State University |
Rasmussen P.C.,Bird Group |
Allen D.N.S.,97 Sussex Way |
Collar N.J.,Bird Group |
And 7 more authors.
Forktail | Year: 2012
We show, based on morphology and especially vocalisations, that the Philippine Hawk Owl Ninox philippensis requires treatment as seven allopatric species and at least one additional subspecies. Morphological distinctions between three groups of taxa are striking, and although taxa within one major group are relatively similar in plumage they vary rather consistently in size and proportions. It has not been possible until now to resolve the species limits in this complex due mainly to the lack of sound recordings of key taxa, a problem now rectified. Vocalisations differ significantly between all seven species, the limits of which are incongruent with all previous taxonomies. Taxa from Mindoro (mindorensis), Mindanao (spilocephala), Camiguin Sur (named herein), and the Sulu Islands (reyi) exhibit especially great vocal differences from all other taxa along with smaller but consistent differences in plumage and morphometrics. Although specimens have been in museum collections for many years, two of these species and one subspecies have heretofore remained undescribed, and we formally name these taxa for science. The recommended species-level treatment and English names of the N. philippensis complex are: Luzon Hawk Owl N. philippensis; Mindanao Hawk Owl N. spilocephala; Mindoro Hawk Owl N. mindorensis; Sulu Hawk Owl Ninox reyi; Romblon Hawk Owl N. spilonota; Camiguin Hawk Owl new species; and Cebu Hawk Owl new species.