Larus cachinnans

(last update: February 16, 2013)

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cachinnans in Poland

cachinnans in Holland

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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
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adult July
adult August
adult September
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adult December

Larus cachinnans hybrid 5CY female 6P01 April 26 2008, Włocławek Reservoir, central Poland. Picture: Grzegorz Neubauer.

5CY female backcross hybrid Caspian x Herring Gull (right), Wloclawek, central Poland, April 26 2008. Mother Herring, father hybrid Caspian x Herring. Ringed as chick in Wloclawek on May 09 2004. Paired with male Caspian. Although the plumage is not fully adult yet (note the brown-spotted wing-coverts), its iris is non-spotted and the eye-ring yellow, both matching Herring Gull. As in other backcrosses, hybrid origin is hardly detectable in the field (evident only in the bill, which is slimmer than usual for Herring). Its alert stance makes it look long-necked and small-headed.