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
Bonaparte's or Black-headed Gull?
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="KnockerNorton" data-source="post: 1245609" data-attributes="member: 66452"><p>JANJ, you seem to be entertaining the fact that the bird might be a BHG?</p><p></p><p>If so, how can you explain the presence of dark areas on the back of the head, where BHG has no hood? I can't understand the problem with this bird - it looks just like a Bonaparte's except for the reddish bill. So it is a Bonaparte's with a reddish bill (whether that's real or an image artifact)? If it's a hybrid - what with? And why does it show no structural/plumage characters of any other speices? If it's a BHG, why does it have a small bill, dainty structure and a dark hood on the back of the neck? That's quite a collection of abberations for one individual. </p><p></p><p>When you discount all other species based on plumage and structure, it only leaves Bonaparte's. And we also have a big question mark over the true redness of the entire bill. So I think we can safely identify the bird, but leave the question of the redness unanswered, rather than the question of the species.</p></blockquote><p></p>
[QUOTE="KnockerNorton, post: 1245609, member: 66452"] JANJ, you seem to be entertaining the fact that the bird might be a BHG? If so, how can you explain the presence of dark areas on the back of the head, where BHG has no hood? I can't understand the problem with this bird - it looks just like a Bonaparte's except for the reddish bill. So it is a Bonaparte's with a reddish bill (whether that's real or an image artifact)? If it's a hybrid - what with? And why does it show no structural/plumage characters of any other speices? If it's a BHG, why does it have a small bill, dainty structure and a dark hood on the back of the neck? That's quite a collection of abberations for one individual. When you discount all other species based on plumage and structure, it only leaves Bonaparte's. And we also have a big question mark over the true redness of the entire bill. So I think we can safely identify the bird, but leave the question of the redness unanswered, rather than the question of the species. [/QUOTE]
Insert quotes...
Verification
Post reply
Forums
Birding
Bird Identification Q&A
Bonaparte's or Black-headed Gull?
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