Herring Gull- Zilvermeeuw (argentatus & argenteus)

(last update: 7-2-2007)

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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

(2 images) Herring Gull KA803cy (argentatus), January 15 2004, Lubna rubbish dump, Poland (5202'N 2108'E).

A typical argentatus ringed red KA80. Ringed as pullus Larus argentatus / Herring Gull (Lar.arg.-complex) on June 29 2002 at Snudy Lake, Lakino Island, Braslav district, Vitebsk region, Belarus (55.46'N 27.03'E). Another bird from the same island: red K756 ringed in 1999.

The brown second generation primaries lack a mirror on P10. The second generation tail has a broad dark tail-band.
The new scapulars in northern argentatus may appear very second generation-like, as this individual clearly illustrates. There are no uniform grey feathers, but all are brownish with a clear anchor pattern. Some grey-based scapulars appear abraded at the fringes already, especially in the upper scapulars and the back.
This individual has moulted the tertials #1-3 and some wing-coverts in the partial autumn moult as 2cy bird: greater coverts #1-3 have been replaced, median coverts #1-3 and and some outer lower lesser coverts have been replaced. The new feathers have fresh fringes and tips. The patterns are very similar to the second generation feathers, although a few are typically grey based.