Radde's warbler

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Radde's warbler
In Thailand

Least Concern  (IUCN 3.1)[1]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Phylloscopidae
Genus: Phylloscopus
Species:
P. schwarzi
Binomial name
Phylloscopus schwarzi
(Radde, 1863)
Range of P. schwarzi
  Breeding
  Passage
  Non-breeding

Radde's warbler (Phylloscopus schwarzi) is a leaf warbler which breeds in Siberia. This warbler is strongly migratory and winters in Southeast Asia. The genus name Phylloscopus is from Ancient Greek phullon, "leaf", and skopos, "seeker" (from skopeo, "to watch"). The specific schwarzi commemorates German astronomer Ludwig Schwarz (1822–1894).[2]

Description

This is a warbler similar in size to a willow warbler. The adult has an unstreaked brown back and buff underparts. There is a very long prominent whitish supercilium, and the pointed bill is thicker than that of the similar dusky warbler. The legs are paler than dusky's, and the feet look large, reflecting the more terrestrial lifestyle of this warbler. The sexes are identical, as with most warblers, but young birds are yellower below. The call is a soft chick.[3]

Distribution and habitat

Radde's warbler breeds in southern parts of Central and Eastern Siberia as far east as Korea and Manchuria. It is a migratory species and spends the winter in

insectivorous
.

Breeding

The nest is built low in a bush and about five eggs are laid. They have a greyish background colour mottled and streaked with fine markings of brownish-olive, scattered evenly over the surface and which nearly obscures the base colour. They are approximately 17 by 13 millimetres (0.67 by 0.51 in).[3]

This small warbler is prone to vagrancy as far as western Europe in October, despite a 3000 km distance from its breeding grounds. It has been recorded from the Copeland Bird Observatory in County Down, Northern Ireland where it was first recorded for Northern Ireland in 2008.[4] It has also occurred as an accidental in Heligoland.[3]

References

  1. doi:10.2305/IUCN.UK.2016-3.RLTS.T22715284A94447312.en
    . Retrieved 12 November 2021.
  2. ISBN 978-1-4081-2501-4
    .
  3. ^ a b c d Witherby, H. F., ed. (1943). Handbook of British Birds, Volume 2: Warblers to Owls. H. F. and G. Witherby Ltd. pp. 26–27.
  4. ^ Leonard, K. 2008 Annual Report for 2008. Copeland Bird Observatory p.51 – 52

External links

Wikimedia Commons has media related to Phylloscopus schwarzi.
Wikispecies has information related to Phylloscopus schwarzi.
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