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Seicercus warbler, Khao Yai NP, Thailand (1 Viewer)
- Thread starter BKKBen
- Start date
Andy Adcock
Worst person on Birdforum
I think we'd need to see more than this for an ID, Whistler's must also a possibility?
A
A
Not in Thailand - its range extends no further than Myanmar.
According to the checklist, the other possibility here is Marten's. This particular bird has very little in the way of a lateral crown stripe and has a shortish bill with an apparent dark ridge on the upper mandible, which are better for Alstrom's. I wouldn't like to put money on it though - it's best to hear these things call.
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Grahame Walbridge
Well-known member
Whistler's does not occur in Thailand Andy.
Alstrom's (Plain-tailed) is by far the most numerous seicercus at KY, but Marten's also occurs there. The angle of the shot is not very helpful beyond seicercus sp IMO.
Voice is by far the most reliable means of separation.
Grahame
Post crossed with Andy's. Re bill is difficult to judge size/length from this angle but surely its soror that has the latest bill?
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Andy Adcock
Worst person on Birdforum
Robson state 'SE Asia Common' for Whistler's, must be interpreting that rong?
A
Re bill is difficult to judge size/length from this angle but surely its soror that has the latest bill?
I was looking at some online images and it seemed to me that Marten's has a longer bill. Maybe it was this image that influenced me most:
http://orientalbirdimages.org/search.php?Bird_ID=1854
Bill length seems to vary considerably, so we'd better discount it. The dark ridge on the upper mandible of Alstrom's seems to be a consistent feature, though.
I was looking at some online images and it seemed to me that Marten's has a longer bill. Maybe it was this image that influenced me most:
http://orientalbirdimages.org/search.php?Bird_ID=1854
Bill length seems to vary considerably, so we'd better discount it. The dark ridge on the upper mandible of Alstrom's seems to be a consistent feature, though.
Grahame Walbridge
Well-known member
Birds of SE Asia (Robson) both editions quote 'SE Asia Common resident W Myanmar'!
https://www.hbw.com/species/whistlers-warbler-phylloscopus-whistleri
Grahame
Andy Adcock
Worst person on Birdforum
Two ways to read that Grahame,
'SE Asia, common, resident W Myanmar' or 'SE Asia, common resident W Myanmar'.
I obviously just read 'SE Asia, common'...........:-O
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gandytron
Well-known member
Ben, with these birds it’s definitely good to get familiar with the calls (I store them on my iPhone for reference in the field, and carry small sound recorder). This is notoriously one of the most tricky groups to ID on plumage that you will regularly encounter in Thailand.
Best wishes,
Dave
Best wishes,
Dave
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Grahame Walbridge
Well-known member
Sound advice Dave....no pun intended!
Grahame
Grahame
Andy Adcock
Worst person on Birdforum
Craig Robson gave me that same advice on this group, many years ago when they had just been split.
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BKKBen
Well-known member
Thanks, Dave.
I have started using the Aves Vox app, and xeno-canto, but I didn't have these species on my phone at the time; they are now! haha
Cheers,
Ben.
