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Billede information:
Fugleart: Tangmåge - (Larus dominicanus) - Kelp Gull
Fugleart (IOC): Tangmåge (Larus dominicanus) Kelp Gull - species factsheet
Stemme: Stemmer findes her (eksternt link).
Lokalitet: Knifiss Lagoon, Marokko
Dato: 18. februar 2011
Billede info: Possible Cape Gull Knifiss Lagoon. Notice white mirror on P10 only, broad white trailing edge to the wings, apperently dark eye and possibly olive tinged legs. Upperparts also appers darker than the Great Black-backed Gulls photographed the same day. Any comments to the identification are most welcome.
Fotograf: Tor Olsen, Norge
Uploadet den: 20. februar 2011
Hits: Billedet har været vist 3046 gange.


Silas Kristian Krag Olofson skriver mandag 21. februar 2011 kl. 01.01
It surely looks like eighter a kelp or a cape gull as the mirror on p10 and broad trailing egde rules out GBB. But when is comes to kelp (dominicanus) vs cape (vetula) (considered conspecific by some) it gets more difficult. The white mirror is hard to use as a clear indicative, but the dark eye, the olive tigned legs and the appearent flat crown point towards cape gull. Other indications are the very dark back as you mention, but the lower mandible also shows an obvious angle at the gony spot, which points towards cape. Any more pics of this gull?


Tor Olsen skriver tirsdag 8. marts 2011 kl. 20.09
I've just uploaded two more pictures of the same bird. Both new pictures are of low quality so I'm not sure if they will be accepted by the netfugl admins.

I just read the paper by Olof Jönsson in the latest Birding World. It's evident that both Cape Gull(s?) and Great Black-backed Gulls are still present in the Khnifiss Lagoon. Access to the lagoon has also improved during the last year as there has been built a new visitor centre along the gravel road just before the old wardens house. Entrance is 10 DH. We paid 350 DH for a two hour boat trip on the lagoon.

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