Search found 226 matches

by adriaens
Tue Jan 21, 2014 1:34 pm
Forum: Lesser Black-backed Gull
Topic: delayed moult in LBBG?
Replies: 7
Views: 3194

Re: delayed moult in LBBG?

Alain, did you check the underwing?

http://birdingfrontiers.com/2013/09/23/ ... ltic-gull/
by adriaens
Sun Jan 19, 2014 7:17 pm
Forum: Identification
Topic: Larus glaucoides Kumlieni...?
Replies: 4
Views: 1489

Re: Larus glaucoides Kumlieni...?

Mars, most 1st-cycle Kumlien's Gulls have pale secondaries (though I agree it depends on the angle of viewing to some extent).
This is actually a key feature to separate them from Thayer's Gull.

Helder, your bird looks like a typical Kumlien's Gull to me.
by adriaens
Wed Jan 15, 2014 3:10 pm
Forum: Identification
Topic: Putative Thayer's Gull - Faroe Isles
Replies: 4
Views: 1755

Re: Putative Thayer's Gull - Faroe Isles

Hi Rune, the dark medial band on P10 should exclude Kumlien's Gull. However, are there no shots of the underwing, where it would be easier to judge and confirm this character? On the other hand, not just the broken pattern on P6 is problematic for Thayer's Gull, but also the structure of this bird, ...
by adriaens
Tue Jan 07, 2014 6:45 pm
Forum: Herring Gull
Topic: Question about secondaries
Replies: 3
Views: 2571

Question about secondaries

Hi, does anyone have any photos of a European Herring Gull with tiny, isolated black spot(s) on the secondaries, as in this smithsonianus : http://gull-research.org/smithsonianus/smith4cy/4cyfebr012.html I cannot find anything similar in my collection of photos, so I am wondering if this is a diagno...
by adriaens
Mon Jan 06, 2014 10:36 pm
Forum: Caspian Gull
Topic: 3rd cycle cachi with (almost?) no mirror
Replies: 10
Views: 4439

Re: 3rd cycle cachi with (almost?) no mirror

I must be missing something, as I do not see any problems with the bird on the 2nd pic of the set? Why would black down to P4 be that impossible for Herring Gull? Here is a colour-ringed bird from Belgium with pattern on P4. It was 6 years old when I photographed it: https://lh5.googleusercontent.co...
by adriaens
Mon Jan 06, 2014 6:28 pm
Forum: Caspian Gull
Topic: 3rd cycle cachi with (almost?) no mirror
Replies: 10
Views: 4439

Re: 3rd cycle cachi with (almost?) no mirror

lou bertalan wrote: by the way: what do you make of gregs birds from ivanovo labelled as argentatus with black daown to p4??? certainly these should be hybrids?
lou
Do you have a direct link?
by adriaens
Mon Jan 06, 2014 4:55 pm
Forum: Caspian Gull
Topic: 3rd cycle cachi with (almost?) no mirror
Replies: 10
Views: 4439

Re: 3rd cycle cachi with (almost?) no mirror

one example: last winter there have been seen and photogr. some adult gulls in romania with an "impossible" feature combination: head striation and structure suggested argentatus but in some of these long dorsal tongues AND a solid p5 mark were visible, a combination that as far as i know at least ...
by adriaens
Fri Dec 13, 2013 4:24 pm
Forum: Identification
Topic: Viking or "the dark side"....
Replies: 2
Views: 1085

Re: Viking or "the dark side"....

Nothing wrong for Glaucous Gull here, Antonio.
by adriaens
Tue Nov 19, 2013 1:27 pm
Forum: Identification
Topic: European HG?
Replies: 3
Views: 1330

Re: European HG?

To me, this bird looks more European than American.
Perhaps one of those Herring Gulls from Iceland?
by adriaens
Wed Oct 23, 2013 11:24 am
Forum: Identification
Topic: Another interesting gull
Replies: 2
Views: 1173

Re: Another interesting gull

Wow, nice bird!
This is indeed another 'Viking Gull'. Good stuff!