Search found 47 matches

by Hans Larsson
Mon Apr 09, 2012 11:55 am
Forum: Identification
Topic: Viking Gull or Thayer's Gull in Denmark?
Replies: 25
Views: 12247

Re: Viking Gull or Thayer's Gull in Denmark?

Thank´s for the link´s Brandon! I see your point with the Nelson´s gull, although, like you say, it´s still pretty straightforward to ID. I would be very interested if you could break down the danish bird in a detailed analysis.

Best regards
Hans
by Hans Larsson
Mon Apr 02, 2012 8:54 pm
Forum: Identification
Topic: Viking Gull or Thayer's Gull in Denmark?
Replies: 25
Views: 12247

Re: Viking Gull or Thayer's Gull in Denmark?

During my trip to central CA in early winter 2010 I saw very few Thayer´s gulls, so I had plenty of time to carefully eliminate other possibilities for the birds posted here. IMO, despite the Pacific coast being seriously hybrid-infested, the species is generally very straightforward to ID when seen...
by Hans Larsson
Mon Apr 02, 2012 8:38 am
Forum: Identification
Topic: Viking Gull or Thayer's Gull in Denmark?
Replies: 25
Views: 12247

Re: Viking Gull or Thayer's Gull in Denmark?

Another view of Thay4 from my previous post, to compare underpart mottling.
by Hans Larsson
Sun Apr 01, 2012 10:35 pm
Forum: Identification
Topic: Viking Gull or Thayer's Gull in Denmark?
Replies: 25
Views: 12247

Re: Viking Gull or Thayer's Gull in Denmark?

I should add that my birds are November-December ones, for the record.
by Hans Larsson
Sun Apr 01, 2012 8:14 pm
Forum: Identification
Topic: Viking Gull or Thayer's Gull in Denmark?
Replies: 25
Views: 12247

Re: Viking Gull or Thayer's Gull in Denmark?

Further different Thayer´s gulls from CA for comparison. I would be baffled (or depressed, really) if a hybrid could come up with the set of features that Kent´s bird shows..
by Hans Larsson
Tue Nov 22, 2011 9:44 pm
Forum: Identification
Topic: 1cy gull - what species?
Replies: 10
Views: 3574

Re: 1cy gull - what species?

I agree with Oskar; why not a HG?
by Hans Larsson
Tue Nov 22, 2011 9:13 pm
Forum: Caspian Gull
Topic: arrested moult in cachinnans
Replies: 8
Views: 4051

Re: arrested moult in cachinnans

I think that primary pattern (incl. faint dark shafts on gc) points towards barabensis. Is it possible to exclude this possibility? It would be much of a relief.. :)
by Hans Larsson
Sun Apr 17, 2011 2:07 pm
Forum: Identification
Topic: unsolvable mystery?
Replies: 11
Views: 3138

Re: unsolvable mystery?

Sorry Lou, it should of course be 3rd gen tertials on this bird. I meant 2nd gen in the hypothesis with this bird being a 1st cycle. Regarding argentatus I think it looks like a fine micha in every respect, from head, bill (classic!) and body shape to pattern in general, not to mention the very nice...
by Hans Larsson
Sat Apr 16, 2011 7:01 pm
Forum: Identification
Topic: unsolvable mystery?
Replies: 11
Views: 3138

Re: unsolvable mystery?

I´d also go for 2nd cycle mich. Note for example that coverts/lower tertials and most scaps are of the same generation. A pattern like this in a 1st cycle would require a complete covert moult. Although seen in southern populations, it´s not consistent with the 2nd generation upper tertials. Given i...
by Hans Larsson
Thu Mar 31, 2011 8:09 am
Forum: Common Gull
Topic: Larus canus
Replies: 36
Views: 23391

Re: Larus canus

Yes, indeed a bit confusing to spot a "juvenile Baltic Gull" in early spring :)