Threatened Birds of Asia: the Birdlife International Red Data Book
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Threatened Birds of Asia: The BirdLife International Red Data Book Editors N. J. COLLAR (Editor-in-chief), A. V. ANDREEV, S. CHAN, M. J. CROSBY, S. SUBRAMANYA and J. A. TOBIAS Maps by RUDYANTO and M. J. CROSBY Principal compilers and data contributors ■ BANGLADESH P. Thompson ■ BHUTAN R. Pradhan; C. Inskipp, T. Inskipp ■ CAMBODIA Sun Hean; C. M. Poole ■ CHINA ■ MAINLAND CHINA Zheng Guangmei; Ding Changqing, Gao Wei, Gao Yuren, Li Fulai, Liu Naifa, Ma Zhijun, the late Tan Yaokuang, Wang Qishan, Xu Weishu, Yang Lan, Yu Zhiwei, Zhang Zhengwang. ■ HONG KONG Hong Kong Bird Watching Society (BirdLife Affiliate); H. F. Cheung; F. N. Y. Lock, C. K. W. Ma, Y. T. Yu. ■ TAIWAN Wild Bird Federation of Taiwan (BirdLife Partner); L. Liu Severinghaus; Chang Chin-lung, Chiang Ming-liang, Fang Woei-horng, Ho Yi-hsian, Hwang Kwang-yin, Lin Wei-yuan, Lin Wen-horn, Lo Hung-ren, Sha Chian-chung, Yau Cheng-teh. ■ INDIA Bombay Natural History Society (BirdLife Partner Designate) and Sálim Ali Centre for Ornithology and Natural History; L. Vijayan and V. S. Vijayan; S. Balachandran, R. Bhargava, P. C. Bhattacharjee, S. Bhupathy, A. Chaudhury, P. Gole, S. A. Hussain, R. Kaul, U. Lachungpa, R. Naroji, S. Pandey, A. Pittie, V. Prakash, A. Rahmani, P. Saikia, R. Sankaran, P. Singh, R. Sugathan, Zafar-ul Islam ■ INDONESIA BirdLife International Indonesia Country Programme; Ria Saryanthi; D. Agista, S. van Balen, Y. Cahyadin, R. F. A. Grimmett, F. R. Lambert, M. Poulsen, Rudyanto, I. Setiawan, C. Trainor ■ JAPAN Wild Bird Society of Japan (BirdLife Partner); Y. Fujimaki; Y. Kanai, H. Morioka, K. Ono, H. Uchida, M. Ueta, N. Yanagisawa ■ KOREA ■ NORTH KOREA Pak U-il; Chong Jong-ryol, Rim Chu- yon. ■ SOUTH KOREA Lee Woo-shin; Han Sang-hoon, Kim Jin-han, Lee Ki-sup, Park Jin- young ■ LAOS K. Khounboline; W. J. Duckworth ■ MALAYSIA Malaysian Nature Society (BirdLife Partner); K. Kumar; G. Noramly, M. J. Kohler ■ MONGOLIA D. Batdelger; A. Bräunlich, N. Tseveenmyadag ■ MYANMAR Khin Ma Ma Thwin ■ NEPAL Bird Conservation Nepal (BirdLife Affiliate); H. S. Baral; C. Inskipp, T. P. Inskipp ■ PAKISTAN Ornithological Society of Pakistan (BirdLife Affiliate) ■ PHILIPPINES Haribon Foundation for Conservation of Natural Resources (BirdLife Partner); N. A. D. Mallari, B. R. Tabaranza, Jr. ■ RUSSIA Russian Bird Conservation Union (BirdLife Partner Designate); A. V. Andreev; A. G. Degtyarev, V. G. Degtyarev, V. A. Dugintsov, N. N. Gerasimov, Yu. N. Gerasimov, N. I. Germogenov, O. A. Goroshko, A. V. Kondrat’ev, Yu. V. Labutin, N. M. Litvinenko, Yu. N. Nazarov, V. A. Nechaev, V. I. Perfil’ev, R. V. Ryabtsev, Yu. V. Shibaev, S. G. Surmach, E. E. Tkachenko, O. P. Val’chuk, B. A. Voronov. ■ SINGAPORE The Nature Society (Singapore) (BirdLife Partner); Lim Kim Seng ■ SRI LANKA Field Ornithology Group of Sri Lanka (BirdLife Affiliate); S. Kotagama; S. Aryaprema, S. Corea, J. P. G. Jones, U. Fernando, R. Perera, M. Siriwardhane, K. Weerakoon ■ THAILAND Bird Conservation Society of Thailand (BirdLife Partner); U. Treesucon; R. Jugmongkol, V. Kongthong, P. Poonswad, P. D. Round, S. Supparatvikorn ■ VIETNAM BirdLife International Vietnam Country Programme; Nguyen Cu; J. C. Eames, A. W. Tordoff, Le Trong Trai, Nguyen Duc Tu. With contributions from: S. H. M. Butchart, D. S. Butler (maps), P. Davidson, J. C. Lowen, G. C. L. Dutson, N. B. Peet, T. Vetta (maps), J. M. Villasper (maps), M. G. Wilson Recommended citation BirdLife International (2001) Threatened birds of Asia: the BirdLife International Red Data Book. Cambridge, UK: BirdLife International. © 2001 BirdLife International Wellbrook Court, Girton Road, Cambridge, CB3 0NA, United Kingdom Tel: +44 1223 277318 Fax: +44 1223 277200 Email: [email protected] Internet: www.birdlife.net BirdLife International is a UK-registered charity All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, electrical, chemical, mechanical, optical, photocopying, recording or otherwise, without prior permission of the publisher. ISBN 0 946888 42 6 (Part A) ISBN 0 946888 43 4 (Part B) ISBN 0 946888 44 2 (Set) British Library-in-Publication Data A catalogue record for this book is available from the British Library First published 2001 by BirdLife International Designed and produced by the NatureBureau, 36 Kingfisher Court, Hambridge Road, Newbury, Berkshire RG14 5SJ, United Kingdom Available from the Natural History Book Service Ltd, 2–3 Wills Road, Totnes, Devon TQ9 5XN, UK. Tel: +44 1803 865913 Fax: +44 1803 865280 Email [email protected] Internet: www.nhbs.com/services/birdlife.html The presentation of material in this book and the geographical designations employed do not imply the expression of any opinion whatsoever on the part of BirdLife International concerning the legal status of any country, territory or area, or concerning the delimitation of its frontiers or boundaries. BEAUTIFUL NUTHATCH Sitta formosa Critical — Endangered — Vulnerable C1; C2a This nuthatch has a small, declining, severely fragmented population as a result of loss, degradation and fragmentation of evergreen and semi-evergreen forest. It therefore qualifies as Vulnerable. DISTRIBUTION The Beautiful Nuthatch is scarce in high-altitude evergreen forests, ranging widely from the eastern Himalayas and outlying hills of north-eastern India and Bhutan through the highlands of Myanmar to scattered sites in the Annamite mountains of Laos and Vietnam. There is one record each in southern China and northern Thailand, but no confirmed record from either Nepal (see Remarks 1) or Bangladesh (see Remarks 2). ■ CHINA The species is known from a single locality: ■ Yunnan Huanglianshan Nature Reserve, Luchun county, two males collected, 1,720 m, April 1972, in evergreen broadleaved forest, male collected, 1,900 m, June 1985 (Yang Lan in litt. 1997, specimens in KIZCN). ■ INDIA Records are restricted to the eastern Himalayas in West Bengal and Sikkim and to the ranges of north-eastern India (including the Khasia, North Cachar, Barail, Naga and Mishmi hills). Records are from: ■ West Bengal Darjeeling, undated (Blyth 1843b), pre-1875 (specimen in NHMW), pre- 1886 (two specimens in BMNH), May 1871 (specimen in BMNH), January 1873 (specimen in BMNH), some of these possibly from Mangpu or Senchal, but at least one “obtained in Darjeeling Station itself” by Tickell (Inglis 1933); Senchal, pre-1915 (Mackintosh 1915); Mangpu (Mong Phoo), February 1873 (specimen in BMNH); Buxa Sanctuary (Buxa Tiger Reserve), 1,400 m, 2–4, February 1992 (Allen et al. 1996); ■ Sikkim (see Remarks 3) Tendong (Mount Tendong), one, March–July 1867 (Bulger 1869); ■ Arunachal Pradesh Etalin–Malinye track, January 1994 (Singh 1994); Dreyi, Mishmi hills, 1,800 m, 4–5, January 1947 (female in USNM, Ali and Ripley 1948); Glao, Kamlang Wildlife Sanctuary, unspecified numbers, 1,200 m, October 1997 (Singh 1999); between Kore and Apa Tani, Subansiri, two, undated (Betts 1956), presumably including the specimen (in BMNH) labelled “Apa Tani”, 1,500 m, April 1948; Namdapha National Park, seen regularly in recent years, Hornbill camp, February 1994 (Singh 1994), four between Bulbulia and Rani jheel, February 1994 (Alström et al. 1994b), October 1994–March 1995 (Athreya 1996), two at “27 Miles Camp”, April 1997 (J.-C. Kovacs in litt. 1998), between Bulbulia and Embeong, on three consecutive days, March 1998 (Hornbuckle 1998b, P. Holt in litt. 1998), two, December 1998 (D. Johnson in litt. 1999); Dikrang, Dafla hills, pre-1895 (male in BMNH); Sessa Orchid Sanctuary, West Kameng district, June 1994 (Singh 1994), January 1995 (Athreya and Karthikeyan 1995); Toruputu peak, Dafla hills, 1,750 m, two, winter 1874–1875 (Godwin- Austen 1876b, male in BMNH); Sesni, 1,300 m, April 1992 (Singh 1994); Bhutia foothills (presumably the foothills of the Aka hills adjacent to Bhutan), 450 m, August 1939 (male in BMNH); ■ Assam Haflong, Barail range, 1–2, February 1994 (Alström et al. 1994c); Asalu , North Cachar hills (see Remarks 4), undated (Godwin-Austen 1870a, male in BMNH); Hungrum (Hungroom), North Cachar hills, 2–3 records, undated (Baker 1901); 2279 Threatened birds of Asia ■ Meghalaya Khasia hills (see Remarks 4), apparently recorded by W. T. Blanford, undated (in Baker 1907b), and eggs were apparently taken (“brought to me”: thus the birds not actually seen) at 1,750 m, undated (Baker 1907b; see Remarks 2 under Grey-crowned Prinia Prinia cinereocapilla); ■ Nagaland Kohima, Naga hills, June 1950 (male in FMNH); ■ Manipur Turthang, pre-1895 (three specimens in BMNH); Bolnoi (untraced), Manipur hills, pre-1895 (specimen in BMNH). Unconfirmed records (see Remarks 5) include: Rangiroon, near Darjeeling, West Bengal, 1,950 m, December 1925 (two specimens in BMNH); Rangpo, south Sikkim, 550 m, December 1925 (specimen in BMNH). ■ BHUTAN Although repeatedly reported from the country (Ali 1962) doubts remained (e.g. Ripley 1982), and its presence was only confirmed in 1992 (Moet 1996). A 1994 record cited by Collar et al. (1994) and Harrap and Quinn (1996) is in error (Bishop 1999). Records are from: Thrumshingla National Park, 2 km from Thekpaling, Shemgang district (Shemgang Dzongkhag), c.1,900 m, 21 in a flock, January 1997 (Pradhan 1997a), seven, April 1997 (Pradhan 1997b); Tingtibi, Shemgang district, 600 m, three, January 1992 (Moet 1996); km 25–km 42 on the Deothang–Narphang road (part of the “Tashigang road”), seen regularly in small numbers over recent years by many observers (including seven in April 1999), particularly around 1,400 m (King 1996, Farrow 1997, Bishop 1999a,b, D. Farrow verbally 2000). Although reported to occur in Jigme Dorji National Park (Yonzon 1992, Mongar and Sharma 1995) this record is best treated as provisional (Inskipp and Inskipp 1996). ■ MYANMAR The species is apparently very locally distributed in the country (Smythies 1986). Given that it has occurred (albeit only once) in the Arakan hills (Stanford 1947), it is puzzling that no records come from the Chin hills (a continuation of the same range), particularly the region of Mount Victoria, apart from one unconfirmed report (see below).