Larus cachinnans

(last update: February 16, 2013)

Home

cachinnans PDF

cachinnans in Poland

cachinnans in Holland

cachinnans rings

cachinnans plumages

1cy August
1cy September
1cy October
1cy November
1cy December

2cy January
2cy February
2cy March
2cy April
2cy May
2cy June
2cy July
2cy August
2cy September
2cy October
2cy November
2cy December

3cy January
3cy February
3cy March
3cy April
3cy May
3cy June
3cy July
3cy August
3cy September
3cy October
3cy November
3cy December

sub-adult January
sub-adult February
sub-adult March
sub-adult April
sub-adult May
sub-adult June
sub-adult July
sub-adult August
sub-adult September
sub-adult October
sub-adult November
sub-adult December

adult January
adult February
adult March
adult April
adult May
adult June
adult July
adult August
adult September
adult October
adult November
adult December

From the Rarities Committee's files - Identification of Caspian Gull. Part 2: phenotypic variability and the field characteristics of hybrids, by Chris Gibbins, Grzegorz Neubauer and Brian Small, IN: BB 104/2011.

Fig. 1. Location of sampling areas relative to the distribution of Herring Larus argentatus and Caspian Gulls L cachinnans. For completeness, the breeding range of Yellow-legged Gull L michahellis is also shown. The distributions are taken from Malling Olsen & Larsson (2003). However; for Caspian Gull we have added shading (light green) to include recently colonized areas in Poland. This species has also colonized inland Russia, Belarus and Lithuania, and is known to breed in eastern Germany, but the paucity of data from these areas means that the distribution shown in this figure is best treated as approximate. The two black lines delimit the approximate hybrid zone, based on the best available current knowledge.