Scaly thrush

Species of bird

Scaly thrush
Nominate Z. d. dauma at Godwari, Kathmandu, Nepal
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Turdidae
Genus: Zoothera
Species:
Z. dauma
Binomial name
Zoothera dauma
(Latham, 1790)
Synonyms
  • Geocichla horsfieldi

The scaly thrush (Zoothera dauma) is a member of the thrush family Turdidae.

Distribution and habitat

It breeds in dense wet forests in the Himalayas east through southwestern China to northern Indochina, and with disjunct populations (but possibly separate species) on Iriomote Island off southern Japan, and on Sumatra and Java in Indonesia.[2]

Description

The sexes are similar, 27–31 cm long, with black scaling on a paler white or yellowish background. The most striking identification feature in flight is the black band on the white underwings, a feature shared with most other species in the genus Zoothera, and also Siberian thrush in the genus Geokichla. The male has a song which is a loud, far-carrying mechanical whistle, with 5-10 second pauses between each one second long phrase twee...tuuu....tuuu....tuuu.

Taxonomy

Z. d. horsfieldi, eastern Java, Indonesia

Three subspecies are currently accepted:[2]

  • Z. d. dauma — Himalayas east to southwest China, south to northern Thailand; a short-distance altitudinal migrant, dropping to foothills in winter
  • Z. d. horsfieldiSumatra, Java, Bali, Lombok and Sumbawa; resident
  • Z. d. iriomotensis — Iriomote Island; resident

Several other similar thrushes which were formerly treated as further subspecies are now split off as separate species:[2]

Behaviour

The scaly thrush is very secretive, preferring dense cover. It nests in trees, laying three or four dull green eggs in a neat cup nest. It is omnivorous, eating a wide range of insects, earthworms and berries.

References

  1. ^ BirdLife International 2017. Zoothera dauma (amended version of 2016 assessment). The IUCN Red List of Threatened Species 2017: e.T103879357A111175902. https://doi.org/10.2305/IUCN.UK.2017-1.RLTS.T103879357A111175902.en. Downloaded on 20 August 2019.
  2. ^ a b c "Thrushes – IOC World Bird List". IOC World Bird List – Version 15.1. 2025-02-20. Retrieved 2025-12-05.
  • Brazil, Mark (2009) Birds of East Asia, Christopher Helm, London.
  • Collar, N. J. (2004) Species limits in some Indonesian thrushes, Forktail, 20: 71–87.
  • Internet Bird Collection. Common Scaly Thrush (Zoothera dauma). Retrieved 10 January 2010.
  • Birds of India by Grimmett, Inskipp and Inskipp, ISBN 0-691-04910-6
  • Thrushes by Clement and Hathaway, ISBN 0-7136-3940-7
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