2w. Yellow-legged gull (L. michahellis). 09-11-14

2w. Yellow-legged gull (L. michahellis). 09-11-14

This individual shows a few Caspian gull (L. cachinnans) features. The plain cobert design and the white tip on P10. However, this tip is not crossing the feather and is only visible from the underwing. In Caspians, this should be visible on the upper side when flying. In addition, the general structure od the bird is not Caspiuan like at all, the face is very dirty...

1w Caspian gull (L. cachinnans) 09-02-14

1w Caspian gull (L. cachinnans) 09-02-14. A very nice bird that Camilo Albert found on saturday

1 w caspian gull (L: cachinnans) 15-12-2013. Pictures by Camilo Albert

1 w caspian gull (L: cachinnans) 15-12-2013. Pictures by Camilo Albert

Caspian gull (L. cachinnans). 1-11-13. 2w

This is a very nice 2nd winter bird, and one of the few records in autumn in the area. Note the shape of the bill and the head, the design of the tertials and coberts and the white mirror on p10.

Sorry for the low quality of the pictures, I only had my telephone :(

Herring gull (L. argentatus). 1-11-13. 1w

Sorry for the low quality of the pictures, I only had my telephone :(

Lesser black-backed gull (L. fuscus). 12-2-13. An odd individual with active primary and seconday moult

3-3-13. 2 new Herring gulls (L. argentatus), 1w and 2w

2-3-13. 1w. and Ad. Herring gull (L. argentatus)

1 w. Mistery gull (Larus sp.) 27-1-13

This individual does not fit to any of the species the bird ressembles, Herring gull (L. argentatus) or Yellow-legged gull (L. michahellis). For the first, the primary pattern is not the right one, since the white spots on the outer web of the inner primaries is well defined and not difus at should be, in addition, the outer greater coberts became not much pattern at the base, the head is massive and white with a obvious shadow around the eye. For Yellow-legged, the birds shows a wrong backround colour, more Herring gull-like, the primary projection is short, the black of the base of external tail feathers is very wide and not well-defined and the tertials show a "biten" design and the underwing design is very soft. In addition the post-juvenile moult is very restricted, no including any covert, and it looks like maybe even some old scapulars are left...

Many thanks to Chris Gibbins for comments on the bird!!

Any additional comment will be welcomed.