I would like to ask for opinions on the thrush attached. Persoanlly thought it's a Grey-back Thrush, however I have no field experience with the species (and it has never been recorded in Thailand before!) so you guys here would provide helpful opinions since the species in question is rather common in HK.
Another possibility is an aberrant 1st-winter male Black-breasted Thrush.
for some reason, I still did it wrong for posting photo. would appreciate advice how to do it right. :roll: Author: kmike Time: 15/02/2007 23:47
Hi Chaiyan
saw yourpix on BirdForum.
Its a Grey-backed Thrush.
Cheers
Mike Author: ajohn Time: 16/02/2007 13:45
I think this bird is much too dark on the back for a Grey-backed Thrush which are usually fairly pale grey. The colour on this bird is actually much more similar to Japanese Thrush.
Also, I think the bill is too bright and the orange on the flanks is too dark and extensive. The spots on the coverts of first winter male grey-backed are usually also paler (whitish), and there is less contrast between the tail and rump.
I have no experience of black-breasted but I think that it is more likely to be that species (it seems to fit better with the images on the OBC website). That would also be more likely on range. Author: tbob Time: 16/02/2007 16:16
At the end of your web address for the photo it should be [/img] Author: kchaiyan Time: 24/02/2007 12:38
Thanks all for the response.
I agree with ajohn that the tone of grey hue on the upperparts is darker than noted in Grey-backed Thrush posted in OBI. I looked through the description of both species (T. hortulorum vs T. dissimilis) in Clement's Thrushes of the World and found that the thrush in question would not fit immature (aka 1st-winter) male Black-breasted. Though, the book does not have an illustration of the immature (subadult) plumage of the latter species.
This sighting with photos has been submitted for consideration by Thailand Bird Records Committee. Will see what is the decision.
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