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.

No comments: