cjacky

May I have your help to ID this 4 Warblers please ?
The photo was taken at Hokaido, Japan @ 06-2008

wgeoff

For me, the top 2 are Arctic Warblers and the bottom a Black-browed Reed Warbler.

The third one has an orange lower mandible, more like Eastern Crowned Warbler, but I think the underparts are not white enough so I think this is Arctic also.

[ Last edited by wgeoff at 30/06/2008 11:31 ]

cjacky

Hi Geoff,

Thanks for your help.

HFCheung

I have doubt on the id of the 2nd and 3rd bird.  

On the 2nd bird, the primary projection is clearly shorter than the tail (only about 1/3) from the wing tip.  On Acrtic, the typical ratio is 1 to 1.  Also the head is a shade darker.  So I would guess Pale-legged/Sakhalin Leaf Warbler.  In Japan, it would be Sakhalin.  The little hook at the tip of the upper mandible is not a clear field-mark of Arctic.

On the 3rd bird, the lower mandbile is all orange.  I understand that the lower mandible of Arctic is even darker than normal in the breeding season.  So I would go for Eastern Crowned.

HF Cheung