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ZEISS. Discover the fascinating world of birds, and win a birding trip to Columbia

Eastern Crowned Warbler? - Gyeryongsan, South Korea, 23/7/21 (1 Viewer)

sandwich311

Well-known member
Hi,
I'm not sure which warbler this is. It looks to me like an Eastern Crowned Warbler but I don't see any colouring on the centre of the crown.
Any help would be appreciated.
Thanks
 

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Grahame Walbridge

Well-known member
It's a Pale-legged/Sakhalin Leaf Warbler which explains the absence of a coronal stripe. Note in particular fleshy legs, pale-tipped bill with extensive dark distally to lower mandible and different overall plumage tones, ECW has brighter yellowish-green fringes to remiges and cleaner, whiter underparts. PLLW/SLW's also both habitually pump their tails but separation only by vocalizations so you need a sound recording.

AFAIK, the early date would favour Pale-legged.

Grahame
 
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Grahame Walbridge

Well-known member
Thanks so much for the detailed explanation. That is immensely helpful.
Rob
Rob, in relation to timing should have added the nearest PLLW's breed in North Korea and disperse through July (Duckworth) see https://bioone.org/journals/ardea/v...s-in-Northern-Korea/10.5253/078.095.0112.full while the nearest SLLW.s breed in Hokkaido and migrants should average slightly later in both seasons. However, to stress again , confirmation to species is only by vocalisation.

Grahame
 
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ZEISS. Discover the fascinating world of birds, and win a birding trip to Columbia
ZEISS. Discover the fascinating world of birds, and win a birding trip to Columbia
ZEISS. Discover the fascinating world of birds, and win a birding trip to Columbia

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