查看完整版本: 松雀鷹幼鳥 Besra (Juvenile)

松雀鷹幼鳥 Besra (Juvenile)

2008/09/05 , 九龍公園  Kowloon Park
it try a few times to hunting for Spotted Dove and Pigeon .....even Koel and Blue Magpie also be it's target 3551em5445

#1
[img]http://images4.fotop.net/albums4/yau312/besra/IMG_5485.jpg[/img]

#2
[img]http://images4.fotop.net/albums4/yau312/besra/IMG_5525.jpg[/img]

#3
[img]http://images4.fotop.net/albums4/yau312/besra/IMG_5554.jpg[/img]

#4
[img]http://images4.fotop.net/albums4/yau312/besra/IMG_5580.jpg[/img]

#5
[img]http://images4.fotop.net/albums4/yau312/besra/IMG_5596.jpg[/img]

[[i] Last edited by nlinyau at 7/09/2008 12:38 [/i]]

九龍公園那兒3551em015445

[quote]Original posted by [i]lchunfai[/i] at 5/09/2008 22:25 [url=http://www.hkbws.org.hk/BBS/redirect.php?goto=findpost&pid=13573&ptid=5793][img]http://www.hkbws.org.hk/BBS/images/common/back.gif[/img][/url]
九龍公園那兒3551em015445 [/quote]
鳥池一帶的樹上

Is it a Besra?

[quote]Original posted by [i]lmunchong[/i] at 5/09/2008 23:06 [url=http://www.hkbws.org.hk/BBS/redirect.php?goto=findpost&pid=13575&ptid=5793][img]http://www.hkbws.org.hk/BBS/images/common/back.gif[/img][/url]
Is it a Besra? [/quote]
腹部有心形斑....係赤腹鷹幼鳥3551smile445

I'm quite doubtful about the identification.
Is the heart-shaped spot only found in Chinese Goshawk? I think Bersa can also get these kind of pattern, though they may not be identical.
Last time I saw a juv. Chinese Goshawk is having a bright yellow to orange colored cere. It's quite distinctive. But I'm not sure if it apply to all individuals.
On the other hand, I think the primary projection of this bird is not long, even not reaching half of the tail. Not long enough to make me think of Chinese Goshawk.

Gary

[quote]Original posted by [i]gary[/i] at 6/09/2008 22:19 [url=http://www.hkbws.org.hk/BBS/redirect.php?goto=findpost&pid=13594&ptid=5793][img]http://www.hkbws.org.hk/BBS/images/common/back.gif[/img][/url]
I'm quite doubtful about the identification.
Is the heart-shaped spot only found in Chinese Goshawk? I think Bersa can also get these kind of pattern, though they may not be identical.
Last time I sa ... [/quote]
I see...thank you!

Peter

The back view of this perched [url=http://www.hkbws.org.hk/BBS/viewthread.php?tid=5195&extra=page%3D1][color=DarkOrchid]Chinese Goshawk[/color] [/url]demonstrated the feathers proportion between it's primaries and tail. :)

I think this is a Japanese Sparrowhawk.  Although there is a mesial stripe, it is rather weak and can be present on a young Japanese.  Also compare the bars on the tail, the light bar is thicker then the dark bar.
The question of heart shape is discussed in my talk.  Do anyone have a photo of the heart sharp in Chinese Goshawk?  I think the heart-sharp is at the flank, not at the center.  I am not aware of Japanese having a similar pattern, but on this bird, the hearts are at the center of the belly.  This would be an interesting point to have follow-up on.

HF Cheung

If I missed the talk , how can I improve my skill on identifying raptors??3551smile445
thanks 3551875328cc445

[quote]Original posted by [i]HFCheung[/i] at 8/09/2008 18:04 [url=http://www.hkbws.org.hk/BBS/redirect.php?goto=findpost&pid=13629&ptid=5793][img]http://www.hkbws.org.hk/BBS/images/common/back.gif[/img][/url]
I think this is a Japanese Sparrowhawk.  Although there is a mesial stripe, it is rather weak and can be present on a young Japanese.  Also compare the bars on the tail, the light bar is thicker then  ... [/quote]


Yes, Chinese Goshawk do have heart shaped pattern on it's belly and flanks, based on the record of ringed individual in Oct 2006.
Agree that Japanese Sparrowhawk could have weak mesial stripe but I've no idea if it could have heart-shaped pattern like Chinese and Besra.

Gary

Somebody have recorded my raptor talk on video.  I have asked them to deposit a copy in the office, but so far, I believe they have not done it yet.

HF Cheung

[[i] Last edited by HFCheung at 9/09/2008 20:10 [/i]]