What's new
New posts
New media
New media comments
New profile posts
New review items
Latest activity
Forums
New posts
Search forums
Gallery
New media
New comments
Search media
Reviews
New items
Latest content
Latest reviews
Latest questions
Brands
Search reviews
Opus
Birds & Bird Song
Locations
Resources
Contribute
Recent changes
Blogs
Members
Current visitors
New profile posts
Search profile posts
ZEISS
ZEISS Nature Observation
The Most Important Optical Parameters
Innovative Technologies
Conservation Projects
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
BirdForum is the net's largest birding community dedicated to wild birds and birding, and is
absolutely FREE
!
Register for an account
to take part in lively discussions in the forum, post your pictures in the gallery and more.
Forums
Birding
Bird Identification Q&A
Gull ID - Stubber's Green, UK
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="JANJ" data-source="post: 1363342" data-attributes="member: 20722"><p>I agree on the comments made by Alan.</p><p>Mixed characters.</p><p></p><p>We often speak of the huge variation in LWHG, which of course is correct. However there are some consistent features I belive, by which we are able to identify - with a certain confidence - typical characters belonging to a certain species or ssp.</p><p>Caspian Gull is one of those species that has certain characters which make up for the more or less typical appearance of that species.</p><p>The Caspian Gull below shows characters that are well associated with that species on jizz and plumage. Only the bill would seem to contradict this. Doe´s that mean that it´s not a Caspian? We would accept a Herring Gull with a somehowe different than expected bill shape but by no means a Caspian, or a Yellow_legged for that matter.</p><p>One of the reasons for that is probably that we are much more familiar with Herring Gull.</p><p></p><p><a href="http://waarneming.nl/foto/view/103129" target="_blank">http://waarneming.nl/foto/view/103129</a></p><p></p><p><a href="http://waarneming.nl/foto/view/103128" target="_blank">http://waarneming.nl/foto/view/103128</a></p><p></p><p>JanJ</p></blockquote><p></p>
[QUOTE="JANJ, post: 1363342, member: 20722"] I agree on the comments made by Alan. Mixed characters. We often speak of the huge variation in LWHG, which of course is correct. However there are some consistent features I belive, by which we are able to identify - with a certain confidence - typical characters belonging to a certain species or ssp. Caspian Gull is one of those species that has certain characters which make up for the more or less typical appearance of that species. The Caspian Gull below shows characters that are well associated with that species on jizz and plumage. Only the bill would seem to contradict this. Doe´s that mean that it´s not a Caspian? We would accept a Herring Gull with a somehowe different than expected bill shape but by no means a Caspian, or a Yellow_legged for that matter. One of the reasons for that is probably that we are much more familiar with Herring Gull. [url]http://waarneming.nl/foto/view/103129[/url] [url]http://waarneming.nl/foto/view/103128[/url] JanJ [/QUOTE]
Insert quotes...
Verification
Post reply
Forums
Birding
Bird Identification Q&A
Gull ID - Stubber's Green, UK
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more...
Top
