Removal of Pink-Rumped Rosefinch Carpodacus Eos from the Thai Avifaunal List
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Forktail 26 (2010) SHORT NOTES 145 Indrawan, M. & Somadikarta, S. (2004) A new hawk-owl from the Milton, D. (2008) West Papua and Sulawesi – October 2008. Available at: Togian islands, Gulf of Tomini, Central Sulawesi, Indonesia. Bull. http://www.surfbirds.com/trip_report.php?id=1586 Brit. Orn. Club 124: 160–171. Morris, P. & Demeulemeester, B. (2007) Sulawesi & Halmahera 3–23 Kavanagh, R. P. (1996) The breeding biology and diet of the Masked September 2007. Tour Report. Available at: http:// Owl Tyto novaehollandiae near Eden, New South Wales. Emu 96: www.birdquest.co.uk/pdfs/report/ 158–165. INDONESIA%20(SULAWESI%201)%20REP%2007.pdf Kavanagh, R. P. (2002) Conservation and management of large forest Peake, P., Conole, L. E., Debus, S. J. S., McIntyre, A. & Bramwell, M. owls in southeastern Australia. Pp.201–219 in I. Newton, R. (1993) The Masked Owl Tyto novaehollandiae in Victoria. Aust. Bird Kavanagh, J. Olsen & I. Taylor, eds. Ecology and conservation of Watcher 15: 124–136. owls. 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(1997) Bird observations in Sulawesi & http://mikewatsonsdiary.blogspot.com/2006/09/tangkoko-sulawesis- Halmahera in July/August 1997. Available at: http:// kingfisher-capital.html www.warbler.phytoconsult.nl/celrap2.htm Westdean, G. (2006) Sulawesi Halmahera West Papua July 23–August 22 van Marle, J. G. (1940) Aanteekeningen omtrent de vogels van de 2006. Birdwatching trip report–Indonesia. Available at: http:// Minahassa (N.O.-Celebes). Limosa 13: 65–70, 119–124. www.travellingbirder.com/tripreports/ Marks, J. S., Cannings R. J. & Mikkola H. (1999) Family Strigidae view_birding_tripreport.php?id=302 (typical owls). Pp.76–151 in J. del Hoyo, A. Elliott & J. Sargatal, White, C. M. N. & Bruce, M. D. (1986) The birds of Wallacea (Sulawesi, eds. Handbook of birds of the world, 5: barn-owls to hummingbirds. the Moluccas and Lesser Sunda Islands, Indonesia): an annotated check- Barcelona: Lynx Edicions. list. London: British Ornithologists’ Union (B.O.U. Checklist no. 7). Mauro, I. & Drijvers, R. (2000) Minahassa Owl Tyto inexpectata at Lore Lindu National Park, Sulawesi, Indonesia in December 1998. Forktail 14: 180–182. James A. Fitzsimons, School of Life and Environmental Sciences, Deakin University, 221 Burwood Highway, Burwood VIC 3125, Australia, & The Nature Conservancy, Suite 3-04, 60 Leicester Street, Carlton VIC 3053, Australia. Email: [email protected] Removal of Pink-rumped Rosefinch Carpodacus eos from the Thai avifaunal list PHILIP D. ROUND, PAUL J. LEADER and SURACHIT WAENGSOTHORN The Pink-rumped Rosefinch Carpodacus eos is distributed The specimen is stored in the Centre for Thai National in eastern Qinghai and western Sichuan, China, where it Reference Collections (CTNRC), Environment and breeds at altitudes of c.4,000–5,000 m. It is also recorded Resources Department, Thailand Institute of Scientific from northern Yunnan and eastern Xizang, although and Technological Research, Bangkok. It bears the label there is incomplete concordance among different authors Carpodacus eos gery. (The name ‘gery’ has no basis in the in delimiting both total range and the limits of the published literature and may possibly result from a breeding and wintering areas (Cheng 1987, Clement transcription error from the field label—a misread et al. 1993, MacKinnon & Phillipps 2000, Dickinson 2003). transcription of ‘C. ery’, as an abbreviation of C. erythrinus, The species was added to the list of Thai birds by perhaps?) The measurements recorded on the label are McClure (1969) on the basis of a female specimen collected wing 75.4; tail 58.0; culmen 5.7 and gape 6.2, although at Ban Mae Kah (sic), Mae Taeng, Chiang Mai (CTNRC during our examination the wing measured 77 mm 53-1963) on 25 October 1968. The collecting location is (maximum chord) and the tail 51.5 mm (Table 1). read off the Royal Thai Survey Department 1:50,000 map This apparent Pink-rumped Rosefinch record was sheet (Sheet no. 4747 II, Series L7017), as Ban Mae Ka, subsequently listed in Lekagul & Cronin (1974), King et 19º08′N 98º56′E, elevation c.350 m. It lies approximately al. (1975), Lekagul & Round (1991) and Robson (2000, 2 km north-west of Mae Taeng district town. 2002). The identification of the specimen was always 146 SHORT NOTES Forktail 26 (2010) potentially questionable, however, as McClure’s report the median coverts of CTNRC 53-1963, although different never stated how it was arrived at, nor how females of the from any CTNRC specimens of Common Rosefinches, closely similar Beautiful Rosefinch C. pulcherrimus could also resembled some Common Rosefinches in BMNH. It be excluded. differed from both Pink-rumped and Beautiful Rosefinch At the request of PDR, PJL carried digital images of specimens, the median coverts of which both showed dark CTNRC 53-1963 for comparison with specimens of other grey centres and a thin off-white fringe to the outer web. rosefinches in The Natural History Museum, Tring Both Pink-rumped and Beautiful Rosefinches are (hereafter BMNH) in order to verify its identification. heavily black-streaked on the entire underparts including the undertail-coverts. While CTNRC 53-1963 shows clear Plumage black streaks on a whitish ground-colour on the throat The specimen immediately stood out from a series of 18 and breast, the lower belly and undertail-coverts are brown-plumaged Common Rosefinches in the CTNRC unmarked whitish. CTNRC 53-1963 was more strongly collection in being markedly smaller, whiter and more streaked on the throat and breast than any Common heavily streaked on the underparts. It had blacker, more Rosefinch examined, although some approached CTNRC precise streaks on throat and breast (compared with 53-1963 in distinctness of the breast-streaking. In browner, blurred streaks in all brown-plumaged C. particular, CTNRC 53-1963 resembles the juvenile C. erythrinus in the CTNRC collection). It showed two erythrinus roseatus illustrated in Rasmussen & Anderton prominent whitish wing-bars formed by broad tips to the (2005). median coverts and greater coverts, and the median coverts showed prominent pointed black feather centres. The Measurements and structure rump and upper tail-coverts were unstreaked. An examination (PDR) and photographs (PJL) of the Female specimens of both Pink-rumped and Beautiful specimen readily indicated that it was neither Pink-rumped Rosefinches examined in BMNH both showed bold black nor Beautiful Rosefinch based on its larger and more centres to the feathers of the crown and upperparts, giving convex bill (the bill is smaller, with an almost straight them a prominently streaked appearance. In contrast, the culmen in both Pink-rumped and Beautiful Rosefinch); streaking on the upperparts of CTNRC 53-1963 was much long primary projection; and proportionately longer wings less contrasting, browner, more blurred and less bold, and and shorter tail (Table 1). These differences were closely similar to that of most Common Rosefinches. The confirmed when the photographs were compared directly pointed dark centres and sharply demarcated white tips to with specimens of all three species at BMNH. Table 1. Wing and tail measurements of rosefinches Carpodacus spp. (wing measured to nearest 0.5 mm with a wing-rule, tail to nearest 0.1 mm with dial callipers). Taxon n Wing length Tail length Wing:tail ratio C. erythrinus ssp. 29 78–91 (x= 83.0±2.70) 50.2–59.0 (x= 54.8±2.48) 1.36–1.67 C. p. pulcherrimus 8 73–83 (x= 77.8±3.15) 57–66 (x= 61.8±3.06) 1.17–1.33 C. eos 4 70.0–74.0 58.0–62.0 1.12–1.21 CTNRC 53-1963 77.0 51.5 1.5 Figure 1. Scattergram of wing and tail measurements for Carpodacus eos, C. p. pulcherrimus and C. erythrinus, based on data in Table 1. Forktail 26 (2010) SHORT NOTES 147 A scattergram of wing length against tail length (Fig. comments on digital images of the CTNRC specimen. We are also 1) indicates clearly that CTNRC 53-1963 clusters with grateful to Pamela C. Rasmussen (Department of Zoology and Museum, Common Rosefinch, rather than with either Pink-rumped Michigan State University) and to Peter Clement and Richard Thomas or Beautiful Rosefinch. The wing:tail ratio was 1.5. This for their comments on drafts of this manuscript. Philip Round is compares with a ratio of 1.36–1.67 for other Common supported by The Wetland Trust (UK). Rosefinch examined (n = 29); 1.18–1.21 for the short- winged, relatively long-tailed Pink-rumped Rosefinch (n = 4) and 1.17–1.33 (n = 8) for nominate Pink-rumped REFERENCES Rosefinch which is somewhat intermediate. Cheng, Tso-Hsin (1987) A synopsis of the avifauna of China. Beijing: Conclusion Science Press. The addition of Pink-rumped Rosefinch to the Thai Clement, P., Harris, A. & Davis, J. (1993) Finches and sparrows. London: faunal list on the basis of specimen CTNRC 53-1963 Christopher Helm.