Board logo

Subject: [Hong Kong] Gull ID please [Print This Page]

Author: jsk_ppp    Time: 5/09/2016 22:40     Subject: Gull ID please

Is it a first winter Slaty-backed Gull?  Thank you.

Mai Po - 4 September 2016

Image Attachment: DSC_4139_w1080bws.jpg (5/09/2016 22:40, 94.52 KB) / Download count 374
http://hkbws.org.hk/BBS/attachment.php?aid=27147


Author: cgeoff    Time: 6/09/2016 14:18

It's not Slaty-backed, no. However, do you have more photos? Images showing the bird side-on and in flight would be interesting.

GeoffC
Author: jsk_ppp    Time: 6/09/2016 22:47

Thank you for your advice.  I have two more photos, but no side-on nor in-flight showing the back and tail.

Image Attachment: DSC_4153_w1080bws.jpg (6/09/2016 22:47, 83.08 KB) / Download count 367
http://hkbws.org.hk/BBS/attachment.php?aid=27148



Image Attachment: DSC_4112_w1080bws.jpg (6/09/2016 22:47, 94 KB) / Download count 410
http://hkbws.org.hk/BBS/attachment.php?aid=27149


Author: ajohn    Time: 7/09/2016 21:11

This gull has been around for a few weeks, joining the two that have oversummered in Deep Bay. It has very pale plumage (whitish) with darker subterminal marks on the upperparts, and on this basis I had thought it was a Mongolian Gull.
I'm slightly confused by age though, because I thought the body looks like a first winter, but the stage of moult does not seem to be correct for that age.
Author: jsk_ppp    Time: 7/09/2016 23:57

Thank John for the reply.  I have two more photos, but I guess they won't be of any help.

Image Attachment: DSC_4149_w1260bws.jpg (7/09/2016 23:57, 88.87 KB) / Download count 341
http://hkbws.org.hk/BBS/attachment.php?aid=27154



Image Attachment: DSC_4150_w1080bws.jpg (7/09/2016 23:57, 92.46 KB) / Download count 359
http://hkbws.org.hk/BBS/attachment.php?aid=27155






Welcome to HKBWS Forum 香港觀鳥會討論區 (http://hkbws.org.hk/BBS/) Powered by Discuz! 6.0.0