Crow-billed Drongo Dicrurus annectens 鴉嘴卷尾
Category I. Accidental.
IDENTIFICATION
Sep 2014, Allen Chan. First-winter.
27-32 cm. Stout drongo with thick bill that has dense feathering at base which may hide the nostrils. Forehead and face are dull blackish, while much of the remainder is glossed steel blue. Tail long but not deeply forked.
Sep 2014, YAM Wing Yiu. First-winter.
First-year birds have white-spotted underparts, brown iris and slightly shallower tail fork. Iris deep red in adults.
VOCALISATIONS
As is typical of the genus a diverse vocabulary of calls, though they are generally richer and fuller than other drongos in HK.
DISTRIBUTION & HABITAT PREFERENCE
The sole record occurred at the migrant hotpot of Po Toi.
OCCURRENCE
2014: a first-winter was on Po Toi during 7-18 September (Yam 2016).
BEHAVIOUR, FORAGING & DIET
No observations.
RANGE & SYSTEMATICS
Monotypic. Breeds in the Himalayas east through Indochina to southwest China (including Hainan) as far south as north Thailand; winters close to breeding range and south through southeast Asia to Sumatra and west Java (Rocamora and Yeatman-Berthelot 2020, Liu and Chen 2020).
CONSERVATION STATUS
IUCN: Least Concern. Population trend unknown.
Rocamora, G. and D. Yeatman-Berthelot (2020). Crow-billed Drongo (Dicrurus annectens), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.crbdro1.01
Liu, Y. and Y. H. Chen (eds) (2020). The CNG Field Guide to the Birds of China (in Chinese). Hunan Science and Technology Publication House, Changsha.
Yam, W. Y. (2016). Crow-billed Drongo Dicrurus annectans on Po Toi Island. The first Hong Kong record. Hong Kong Bird Report 2014: 302-303.
