查看完整版本: White Wagtail (lugens)

kkitty 9/12/2011 12:20

White Wagtail (lugens)

26.11.2011
Tuen Mun

Male
[img]http://farm8.staticflickr.com/7142/6479790653_24d2121935_b.jpg[/img]

Is this a subspecies lugens (female) or just a typical ocularis?
[img]http://farm8.staticflickr.com/7016/6479790243_9e3331b144_b.jpg[/img]

cgeoff 9/12/2011 20:51

Two birds here. First a male, second a female. Both lugens.

Well done.

GeoffC

kkitty 9/12/2011 22:07

[quote]Original posted by [i]cgeoff[/i] at 9/12/2011 20:51 [url=http://www.hkbws.org.hk/BBS/redirect.php?goto=findpost&pid=45160&ptid=15321][img]http://www.hkbws.org.hk/BBS/images/common/back.gif[/img][/url]
Two birds here. First a male, second a female. Both lugens.

Well done.

GeoffC [/quote]

Thank you very much, Geoff! 3551873d93aa445

ddavid 9/12/2011 22:55

Geoff -

What are the key features that enable you to id the second photo as [i]lugens[/i] and not [i]ocularis[/i]?

Dave

kkitty 11/12/2011 21:41

Hi Dave,

It was the previous discussion about the same topic.  Maybe it can provide some clue (?)
[url]http://www.hkbws.org.hk/BBS/viewthread.php?tid=10670[/url]

Kitty
:)

ddavid 12/12/2011 12:14

Kitty -

Thanks for the link!

David

ajohn 12/12/2011 14:25

The second bird can be ID'ed as [i]lugens[/i] based on the shape of the eye-stripe (broader behing the eye) and the extensive white in the wing coverts. (Be careful of the second feature - [i]ocularis[/i] can also have extensive white in the wing, especially males in spring). I think the slightly blue tone to the mantle probably also favours [i]lugens[/i] but this may be related to light conditions.

I suspect that [i]lugens[/i] is under-recorded in HK because female birds like this are so similar to [i]ocularis[/i] - and similarly I wonder if [i]ocularis[/i] may be over-recorded in winter!

kkitty 12/12/2011 21:39

Thanks John for the detailed explanation.

Attached one side-view photo, I hope it can show the features more clearly.
[img]http://farm8.staticflickr.com/7146/6498844305_f70a770d9c_b.jpg[/img]
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