Lesser Black-backed Gull - graellsii & intermedius

(last update: 22-2-2011)

lbbg 1cy May
lbbg 1cy June
lbbg 1cy July
lbbg 1cy August
lbbg 1cy September
lbbg 1cy October
lbbg 1cy Nov - Dec

lbbg 2cy Jan-Febr
lbbg 2cy Mar-April
lbbg 2cy May
lbbg 2cy June
lbbg 2cy July
lbbg 2cy August
lbbg 2cy September
lbbg 2cy October
lbbg 2cy Nov - Dec

lbbg 3cy Jan-April
lbbg 3cy May
lbbg 3cy June
lbbg 3cy July
lbbg 3cy August
lbbg 3cy September
lbbg 3cy October
lbbg 3cy Nov - Dec

lbbg sub-ad Jan-April
lbbg sub-ad May
lbbg sub-ad June
lbbg sub-ad July
lbbg sub-ad Aug
lbbg sub-ad Sept
lbbg sub-ad Oct
lbbg sub-ad Nov - Dec

lbbg ad January
lbbg adult February
lbbg adult Mar-April
lbbg adult May
lbbg adult June
lbbg adult July
lbbg ad August
lbbg ad September
lbbg ad October
lbbg ad Nov - Dec

LBBG 3cy November 08 2001, Westkapelle, the Netherlands.

This bird clearly shows what may be expected in 3cy (third winter) LBBG:

Very pale legs and much black on the bill, combined with a pinkish base;
The old coverts extensively brown bleached;
New tertials show a grey base with a white tip which is confined to the inner-web. Old tertials are either brownish bleached or show a dark brown-black centre and vermiculation on the upper half;
One scapular covert (the lower) has a rather brownish centre, not pure grey as in adults;
Some of the recently moulted rectrices show black isolated spots near the centre (often found in the inner tail-feathers);
Primaries show very small white tips;
The mirror on p10 is relatively small in size;
Primary moult score is high on average. In this individual 50, all primaries have been renewed and are full-grown.