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

Subject: Blue Whistling Thrush 紫嘯鶇 (ringed) [Print This Page]

Author: tsawong Time: 20/04/2010 00:15 Subject: Blue Whistling Thrush 紫嘯鶇 (ringed)

Blue Whistling Thrush 紫嘯鶇

Lam Tsuen
18 April 2010

Can anyone advise :
1. Without ring number, can we guess when and where the bird was ringed?
2. What was the prey?
Sorry about photo quality.

Image Attachment: IMG_5957_2.jpg (20/04/2010 00:15, 153.19 KB) / Download count 537
http://hkbws.org.hk/BBS/attachment.php?aid=6365

Image Attachment: IMG_5966_2.jpg (20/04/2010 00:15, 175.43 KB) / Download count 611
http://hkbws.org.hk/BBS/attachment.php?aid=6366

Image Attachment: IMG_5988_1.jpg (20/04/2010 00:15, 169.68 KB) / Download count 583
http://hkbws.org.hk/BBS/attachment.php?aid=6367

Image Attachment: IMG_6030_1.jpg (20/04/2010 00:15, 113.32 KB) / Download count 483
http://hkbws.org.hk/BBS/attachment.php?aid=6368

Author: subbuteo Time: 20/04/2010 08:23

The prey looks like an earthworm, a rather battered one. Where did you take the photo in Lam Tsuen? Blue whistling thrush is not so common there, I hear them occasionally and see them even less.

Author: tsawong Time: 20/04/2010 20:33

It was on the 'Wishing Tree' side of the main road. Just walk past the Edinburgh Training Camp until there is a bridge over the River. We also saw a Common Kingfisher and 3 Hair-Crested Drongo nearby.

Author: ajohn Time: 20/04/2010 20:41

This is a VERY interesting record. No birds have been ringed in that part of the Lam Tsuen Valley, which indicates that this probably refers to a local movement (which would be the first known movement for this species I think). If anyone is able to get a photo showing the ring number (or a good enough field view) that would be very useful, although I realise that this would be difficult to achieve.
I will investigate where this bird is likely to originate and post another reply with more details.

Author: kkitty Time: 20/04/2010 21:09

The above photo was taken at KFBG in Dec 2009. Will it be the same bird?
But unfortunately, it is also cannot realise the information with the ring.

Author: laubak Time: 20/04/2010 21:59

I also found this bird at KFBG on 17/4/2010 12:55. Below pls found the photo and the best I could do is to read the "3B" (or 3F??) wording on the ring.

Author: ajohn Time: 21/04/2010 14:20

These are presumably two different birds, one at KFBG and another in Lam Tsuen. If anyone has more photos, I would urge you to post them or to contact me by PM. I will try to establish the individuals involved.
The KFBG bird appears to include -38- in the ring number. This might indicate a new longevity record for the species. Any photos showing more of the ring number would be very useful.
The Lam Tsuen bird has, I suspect, come from KFBG. This would be the first confirmed movement of this species. Again, if anyone can provide some or all of the ring number, it would be very useful. It looks like the bird may be nesting, in which case it may be possible to get a good view (but please DO NOT disturb the nest!)

Please note that it is always useful to post pictures of ringed birds, especially if the ring number can be read. Alternatively, PM me with details of a ring. For some species (especially prinias, white-eyes and bulbuls) it may be difficult to be certain of the individual involved. For others, it may be possible to work this out from a partial ring number or location. I understand that most photographers take great pride in getting such good photos, but remember that the crucial information on a ring may be obtained even when the photo is not perfect (for example if the bird is partly obscured). If you are able to photograph a ringed bird, please try to get photos from as many angles as possible (to maximise the number of digits seen).

In HK, photographs of ringed birds have provided information on the migration of Japanese Yellow Bunting (the bird ringed in Japan and photographed on Po Toi), the local movement of White-shouldered Starlings (from colour-ringed birds) and a longevity record for (at least) Long-tailed Shrike. It seems that photographers may have an important role in future with obtaining information about ringed birds.

[ Last edited by ajohn at 21/04/2010 14:23 ]

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