Subject: Raptor ID [Print This Page] Author: ttakyan Time: 8/01/2007 00:00 Subject: Raptor ID
May I know is that a Rough-legged Buzzard ?
Thanks
Mai Po, 7 Jan
Author: tmichael Time: 8/01/2007 05:16
Just a Common Buzzard, as far as I can see.
Note the undertail pattern - R-l. B. has a paler tail with some sort of terminal bar, often in very striking contrast.
Birds wintering and passing through HK are presumed to be B.b. japonicus, but I'd be interested to know how they can be separated from B.b. vulpinus of Central Asia/Western China. Does anyone know?
Mike Turnbull. Author: ttakyan Time: 8/01/2007 14:31
[quote:0eab6980b1="tmichael"]Just a Common Buzzard, as far as I can see.
Note the undertail pattern - R-l. B. has a paler tail with some sort of terminal bar, often in very striking contrast.
Birds wintering and passing through HK are presumed to be B.b. japonicus, but I'd be interested to know how they can be separated from B.b. vulpinus of Central Asia/Western China. Does anyone know?
Mike Turnbull.[/quote]
Thanks Mike Author: kchaiyan Time: 29/01/2007 22:29
B. b. vulpinus has rufous uppertail with obvious dark subterminal band (adult) and no prominent dark carpal path as the patches are blended in dark underwing coverts (than pale underwing coverts in japonicus, thus obvious carpal patches).
In Thailand, both ssp. (japonicus and vulpinus) occur, but it still remains unclear if an intergrade of vulpinus and japonicus (aka burmanicus at least, in Myanmar) also occur.
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