Herring Gull 3cy (argenteus), February
07 2002, IJmuiden, the Netherlands (52.27N-04.33E).
A 3cy argenteus
brown second generation primaries
with rounded tips (unlike the
pointed juvenile primaries) which lack a mirror on P10. The second generation tail has a broad dark
and a thin white fringes.
About half of the scapular region consist of old barred feathers
(note the worn fringes) with bleached
pale centres and a brown sub-terminal band and shaft-streak.
The recently replaced
scapulars are largely grey-based with an accentuated shaft-streak.
This individual has moulted some wing-coverts to third
generation feathers in the partial autumn moult as 2cy bird: the
two upper tertials have been replaced. The third generation tertials
show a grey base with a faint brown wash and a hint of an arrow-head or
transversal bar at the tip. The two inner greater coverts were replaced as well
and they show the same pattern as the upper tertials. Those new feathers
strongly contrast with the barred second generation central and outer
greater coverts which are clearly barred white-brown patterned. One inner
median coverts has been replaced as well.
The bill is two-toned and the iris is pale.