Herring Gull- Zilvermeeuw (argentatus & argenteus)

(last update: 7-2-2007)


Herring Gull plumages:

hg 1cy July
hg 1cy August
hg 1cy September
hg 1cy October
hg 1cy November
hg 1cy December

hg 2cy January
hg 2cy February
hg 2cy March
hg 2cy April
hg 2cy May
hg 2cy June
hg 2cy July
hg 2cy August
hg 2cy September
hg 2cy October
hg 2cy November
hg 2cy December

hg 3cy January
hg 3cy February
hg 3cy March
hg 3cy April
hg 3cy May
hg 3cy June
hg 3cy July
hg 3cy August
hg 3cy September
hg 3cy October
hg 3cy November
hg 3cy December

hg sub-ad January
hg sub-ad February
hg sub-ad March
hg sub-ad April
hg sub-ad May
hg sub-ad June
hg sub-ad July
hg sub-ad August
hg sub-ad September
hg sub-ad October
hg sub-ad November
hg sub-ad December

hg ad January
hg ad February
hg ad March
hg ad April
hg ad May
hg ad June
hg ad July
hg ad August
hg ad September
hg ad October
hg ad November
hg ad December

Herring Gull H-112075 3cy (argenteus), January 05 2002, Le Portel / Boulogne-sur-Mer, France (50.42N,1.34E).

A typical argenteus, ringed Belgium, Bruxelles, ringed as pullus on July 14 2000 at Zeebrugge (51.20N 03.11E). The new scapulars are plain adult-like grey. The bill is typical for 3cy birds in January, pinkish base and a broad bill-band. Note the rather brown second generation primaries lacking the mirror on P10. Compared to Scandinavian argentatus, the general impression resembles argentatus in 4cy, which also show an almost complete grey scapular region and single grey feathers in the tertials, inner greater coverts and a few lesser coverts.
The moult-stage is somewhat difficult to interpret by January. The scapulars are more or less uniform grey with just a few patterned brownish feathers left. Many grey scapulars appear abraded at the fringes already, especially in the upper scapulars.
This Belgian individual has moulted a few tertials and wing-coverts in the partial autumn moult as 2cy bird: tertials #2-3 have been replaced, greater coverts #1-3 have been replaced, median coverts #1-3 and #8-10 have been replaced and lower lesser coverts #6-8 have been replaced. The new feathers have fresh fringes and tips and are more adult-like in their patterns.