HKBWS Forum 香港觀鳥會討論區 - Powered by Discuz! Board

Subject: Accipiter id [Print This Page]

Author: Ronaldo Time: 6/02/2011 23:25 Subject: Accipiter id

Saw this accipiter near Luk Keng this afternoon. very active, circling at quite low altitude but at a fast pace.

Hesitating between Besra and Japanese Sparrowhawk, considering small size. tending towards Japanese S. as tail seems short.

Could you please help confirm id?

Thanks

Image Attachment: accipiter1.jpg (6/02/2011 23:25, 40.54 KB) / Download count 581
http://bbs.hkbws.org.hk/attachment.php?aid=8198

Image Attachment: accipiter2.jpg (6/02/2011 23:25, 38.03 KB) / Download count 537
http://bbs.hkbws.org.hk/attachment.php?aid=8199

Author: pitarhk Time: 6/02/2011 23:51

Quote:

Original posted by Ronaldo at 6/02/2011 23:25
Saw this accipiter near Luk Keng this afternoon. very active, circling at quite low altitude but at a fast pace.

Hesitating between Besra and Japanese Sparrowhawk, considering small size. tending tow ...

I think this is Besra.

Author: Tony Time: 7/02/2011 10:42

why not a Crested Goshawk?

Author: brendank Time: 7/02/2011 12:16

Shape doesn't look right for Crested Goshawk--as it only has five "fingers" rather than the expected six for Crested. I wouldn't want to say whether it is Besra or Japanese Sparrowhawk from these photos. I believe this bird is an adult and the presence of a dark mesial stripe would make it a Besra. Unfortunately it is too dark to see that feature in this photo. I would suggest lightening the photo to see whether a mesial stripe was present.

Author: lpaul Time: 7/02/2011 13:43

The barring on the underside of the primaries and secondaries is too broad for Japanese and fits Besra.

Author: Ronaldo Time: 7/02/2011 21:27

Unfortunately, my camera was in my bag at the time the bird was spotted, so hard to focus on settings at the same time as looking at the bird. It is definitely not a goshawk and size would not match other sparrowhawks. I already saw a besra two years ago in nearby area (<1km away). Unfortunately, could not check at home for the mesial stripe barring. Here is a full lightened picture via photoshop. Hope it helps...

Thanks a lot,

Image Attachment: accipiterfull.jpg (7/02/2011 21:27, 64.25 KB) / Download count 526
http://bbs.hkbws.org.hk/attachment.php?aid=8208

Welcome to HKBWS Forum 香港觀鳥會討論區 (http://bbs.hkbws.org.hk/)