Join for FREE
It only takes a minute!
Zeiss - Always on the lookout for something special – Shop now

Welcome to BirdForum.
BirdForum is the net's largest birding community, dedicated to wild birds and birding, and is absolutely FREE! You are most welcome to register for an account, which allows you to take part in lively discussions in the forum, post your pictures in the gallery and more.

Gull id: Slaty-backed gull? taken @ Maipo, Hong Kong

Reply
 
Thread Tools Rating: Thread Rating: 3 votes, 5.00 average.
Old Tuesday 17th April 2012, 17:19   #1
photokai
Registered User

 
Join Date: May 2006
Location: Hong Kong
Posts: 16
Gull id: Slaty-backed gull? taken @ Maipo, Hong Kong

Dear Friend,

I have some difficulties to id this gull taken at Maipo, Hong Kong. Is it a Slaty-backed gull, first winter? Thanks a lot!

http://farm8.staticflickr.com/7178/6...74a09b4dfd.jpg
Slayt-backed Gull? by photokai, on Flickr

http://farm6.staticflickr.com/5447/6...aff3f20901.jpg
ISlayt-backed Gull? by photokai, on Flickr

http://farm8.staticflickr.com/7214/6...2abfaca7c8.jpg
Slayt-backed Gull? by photokai, on Flickr
photokai is offline  
Reply With Quote
Old Tuesday 17th April 2012, 19:06   #2
lou salomon
the birdonist
 
lou salomon's Avatar

 
Join Date: Oct 2004
Location: Stuttgart
Posts: 15,312
hello,

the pale head, underwing and body, "venetian blind" in primaries and advanced covert moult suggests rather a mongolian gull than a slaty-backed in my eyes. but i have no field experience with these birds and it's a difficult matter, so i'd like to see what people say that have seen lots of these species.
__________________
lou
lou salomon is offline  
Reply With Quote
Old Tuesday 17th April 2012, 19:16   #3
rockfowl
Mark Andrews
 
rockfowl's Avatar

 
Join Date: Mar 2008
Location: Leicester, UK
Posts: 8,337
Mongolian was also my first thought but I have no experience of SBG.
__________________
DigiPics & Artwork - http://www.smandrews.com Digivideos - http://www.youtube.com/user/rockfowlmarkandrews
Support the Oriental Bird Club
rockfowl is offline  
Reply With Quote
Old Wednesday 18th April 2012, 07:56   #4
photokai
Registered User

 
Join Date: May 2006
Location: Hong Kong
Posts: 16
Thanks. I'm really not sure since Mongolian gull is seldom found in Hong Kong.
photokai is offline  
Reply With Quote
Old Wednesday 18th April 2012, 10:28   #5
Terry Townshend
Regular vagrant

 
Join Date: Dec 2006
Location: Beijing, China
Posts: 405
Looks like a Mongolian to me. Slaty-backed should be darker overall, not so white-headed and with a darker/more marked uppertail.
__________________
www.birdingbeijing.com
Terry Townshend is offline  
Reply With Quote
Old Thursday 19th April 2012, 10:54   #6
smiths
Registered User

 
Join Date: Oct 2003
Location: the beach
Posts: 900
Any more shots of this bird please?
Especially side-on views could help, I think.
smiths is offline  
Reply With Quote
Old Friday 20th April 2012, 07:34   #7
johnallcock
Registered User

 
Join Date: Feb 2007
Location: Hong Kong
Posts: 1,346
In fact, Mongolian is not too unusual in Hong Kong. It is the second commonest of the large gulls (after Heuglin's), but is often referred to as Yellow-legged or Caspian. Slaty-backed is sometimes seen at Mai Po, but usually no more than one or two individuals.

I'm really not great with first-winter gulls, but Mongolian does look like a good call for this individual.
johnallcock is online now  
Reply With Quote
Old Friday 20th April 2012, 09:04   #8
JANJ
Registered User
 
JANJ's Avatar

 
Join Date: Mar 2005
Location: Sweden
Posts: 8,208
Would be nice to see some more pic of this gull. I would consider Mongolian over Slaty-backed! 1st cycle slaty-backed usually has more dark on tail. The inner primaries on Mongolian often has rather pale outer webs, which combined with the pale inner web makes the dark tips stand out. The inner primary pattern on the subject gull would be acceptable for mongolian I guess.

http://www23.tok2.com/home/jgull/120312/Slaty1w..html

http://www23.tok2.com/home/jgull/050315/slaty.htm

http://www23.tok2.com/home/jgull/mon...229/index.html

http://www23.tok2.com/home/jgull/110318/vegae1w.html


JanJ
JANJ is offline  
Reply With Quote
Advertisement
Reply


Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Ringed 1cy Slaty-backed Gull & unidentified "Herring" Gull from South Japan Ayuwat J Bird Identification Q&A 3 Friday 16th October 2009 15:19
Slaty-backed Gull in New York? birderbf Bird Identification Q&A 15 Saturday 16th June 2007 12:45



Fatbirder's Top 1000 Birding Websites

Help support BirdForum

Page generated in 0.18760490 seconds with 20 queries
All times are GMT. The time now is 07:37.