Thursday 31 January 2013

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.



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