Herring Gull- Zilvermeeuw (argentatus & argenteus)
Herring Gull plumages:
hg sub-ad January
Herring Gull 3cy (argentatus?), May 16 2002, Boulogne/Mer, France (50.42N,1.34E).
This is most probably a 3cy argentatus.
As can be expected in argentatus, the scapulars still show many abraded brown feathers with
only very few plain grey feathers. The
bill is turning slightly yellowish at the centre and a first hint of a red
gonydeal spot is visible, though the bill is still very immature. The two
upper tertials are more densely patterned than the lowest tertials,
lacking a greyish centre. It's hard to tell if those feathers were moulted
in the partial autumn moult to third generation feathers, as all the
tertials and wing-coverts are worn by May.