Search found 248 matches

by Ruud Altenburg
Sun Jul 31, 2011 8:57 pm
Forum: location other - Netherlands
Topic: Kelderhuispolder, Texel 07-05-2011
Replies: 8
Views: 4096

Re: Kelderhuispolder, Texel 07-05-2011

MAPJ was present at my local patch in Heemskerk yesterday.
by Ruud Altenburg
Tue Jul 05, 2011 2:33 pm
Forum: location other - Netherlands
Topic: Kelderhuispolder, Texel 24-06-2011
Replies: 4
Views: 2294

Re: Kelderhuispolder, Texel 24-06-2011

Nice picture indeed! Have you seen this Herring?
by Ruud Altenburg
Wed Jun 22, 2011 12:22 pm
Forum: Identification
Topic: Hybrid or pure?
Replies: 3
Views: 1125

Re: Hybrid or pure?

Hallo Jan thanks for your reply. Surely it's closest to Herring, structurally especially. It just shows an unusual combination of tertial and greater covert pattern, which, in this combination, resembles Caspian. It's also rather long-winged compared to our local birds but this could well be a winte...
by Ruud Altenburg
Sun Jun 19, 2011 8:25 am
Forum: Identification
Topic: Hybrid or pure?
Replies: 3
Views: 1125

Hybrid or pure?

This is an old one from Amsterdam, 24-12-10. Can this still be classified under variation within Herring or should I think of influence of Caspian?
by Ruud Altenburg
Sun Jun 19, 2011 8:24 am
Forum: Identification
Topic: YLG?
Replies: 6
Views: 1931

Re: YLG?

Is Switzerland the only country using clip rings on YLGs?
by Ruud Altenburg
Sat Jun 18, 2011 9:46 am
Forum: Lesser Black-backed Gull
Topic: C51N
Replies: 0
Views: 1548

C51N

A few shots of the third ringed fuscus for Amsterdam on my site:
http://daarruud.home.xs4all.nl/fuscus2ag.html
by Ruud Altenburg
Fri May 13, 2011 1:03 pm
Forum: Identification
Topic: Fourth YLG for Iceland?
Replies: 4
Views: 1248

Re: Fourth YLG for Iceland?

I concur with the grey tone but the head shape is typical michahellis? What would be the alternative?
by Ruud Altenburg
Wed May 11, 2011 7:22 am
Forum: Identification
Topic: Fourth YLG for Iceland?
Replies: 4
Views: 1248

Fourth YLG for Iceland?

Brynjúlfur Brynjólfsson photographed this bird at Heimaey island (south off Iceland), 06-05-11. I don't see much that would plead against YLG, except maybe that the mantle seems to be on the dark side. Not so much when compared to the graellsii LBBGs but the difference between this bird and the Herr...
by Ruud Altenburg
Wed May 11, 2011 7:18 am
Forum: Identification
Topic: Unidentified gull Knokke, Belgium, 06-03-11
Replies: 4
Views: 1366

Unidentified gull Knokke, Belgium, 06-03-11

Jan Baert asked for my opinion on this adult. It seems to show conflicting characters for any species and I couldn't really provide an answer. Maybe someone dares to say something? The ring was not read...
by Ruud Altenburg
Tue May 10, 2011 8:26 am
Forum: Identification
Topic: Puzzling gull
Replies: 3
Views: 805

Re: Puzzling gull

I vote for a pure YLG.