Black-headed Gull (Larus ridibundus) with pale median coverts

This 2cy Black-headed Gull was seen near Aarhus University on February 9, 2012. Note that the outer tertial is new grey; and the majority of the greater and median coverts are new grey with the medians showing only a faint brownish tinge. Especially the unmarked median coverts are not typical for the age class in February.

Black-headed Gull (Larus ridibundus) with leucisme

This adult Black-headed Gull was seen for the first time in Aarhus Harbour on January 11, 2011.

Black-headed Gull (Larus ridibundus) with leucisme

This adult Black-headed Gull was again seen in Aarhus Harbour on December 19, 2010. It has been seen in the central part of Aarhus Harbour for at least 10 winters.

Black-headed Gull (Larus ridibundus) with dark 1cy primary pattern

The wing pattern of this 1st winter Black-headed Gull represents the darker range of the individual variation, but yet clearly within already known variation. It was seen in Grenaa Harbour on December 3, 2010.

Black-headed Gull (Larus ridibundus) with leucisme

Black-headed Gull (Larus ridibundus), adult, 3.12.2010, Århus Harbor, this leucistic ridibundus have been seen in the central part of Aarhus Harbor for at least 10 winters

Black-headed Gull (Larus ridibundus) with leucisme

Black-headed Gull (Larus ridibundus), adult, 13.1.2008, Århus Harbor, this leucistic ridibundus have been seen in the central part of Aarhus Harbor for at least the seven winters.

Black-headed Gull (Larus ridibundus) with aberrant colours or leucisme

Black-headed Gull (Larus ridibundus), 22.7.2010, Følle Bund, Djursland

Black-headed Gull (Larus ridibundus) with aberrant colours or leucisme

Black-headed Gull (Larus ridibundus), adult, 8.1.2009, Århus Harbor, this leucistic ridibundus have been seen in the central part of Aarhus Harbor for at least the last eight winters making it rather old.