Gulls in Catalonia: February 2010

19 February 2010

1 w. Lesser black-backed gull (L. fuscus), 16-02-10

1 w. Lesser black-backed gull (L. fuscus), 16-02-10. A nice individual with pale primary window. Maybe it s a Yellow-legged gull, but second generation coverts are very dark and the post juvenile moult is not so far. The rump is relativelly dark for such pale inner primaries. Any comment will be welcomed.

1 w. Lesser black-backed gull (L. fuscus), 16-02-10

1 w. Lesser black-backed gull (L. fuscus), 16-02-10. This is one of the individuals seen in 7-2-10 seen this time in Cambrils

16 February 2010

Ad. Common gull (L. canus), 14-02-10

1 w. Lesser black-backed gull (L. fuscus), 13-02-10

1 w. Lesser blaack-backed gull (L. fuscus), 13-02-10. A ringed bird from Denmark with early covert moult.

1 w. Lesser black-backed gull (L. fuscus), 14-02-10

1 w. Lesser black-backed gull (L. fuscus), 14-02-10. Note the very patterned Greater and Median Coverts which ressembles Herring Gull. However some of the second generation scapulars are dark and in the field the general structure was more obvious than in the pics. In flight the identification is obvious because of the lack of primary window

15 February 2010

1 w. Herring gull (L. argentatus), 14-02-10

1 w. Herring gull (L. argentatus), 14-02-10. Note the evolution of the appearance since 18-10

1 w. Herring gull (L. argentatus), 14-02-10

1 w. Herring gull (L. argentatus), 14-2-10. Note the evolution of the appearance since 29-11 when it was first seen.

12 February 2010

2w. Yellow-legged gull (L. michahellis), 7-2-10

2w. Yellow-legged gull (L. michahellis), 7-2-10. This is individual is not showing any grey yet. The eye colour suggests the ageing. In addition, there're two different tertial generation and noone is first generation. The tail pattern is neither the typical for 1w YLGs.