Lesser Black-backed Gull (graellsii & intermedius)

(last update: 22-2-2011)

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LBBG rings

lbbg 1cy May
lbbg 1cy June
lbbg 1cy July
lbbg 1cy August
lbbg 1cy September
lbbg 1cy October
lbbg 1cy November
lbbg 1cy December

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

lbbg 3cy January
lbbg 3cy February
lbbg 3cy March
lbbg 3cy April

lbbg 3cy May
lbbg 3cy June
lbbg 3cy July
lbbg 3cy August
lbbg 3cy September
lbbg 3cy October
lbbg 3cy November
lbbg 3cy December

lbbg sub-ad Jan
lbbg sub-ad Febr
lbbg sub-ad March
lbbg sub-ad 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
lbbg sub-ad Dec

lbbg adult January
lbbg adult February
lbbg adult March
lbbg adult April
lbbg adult May
lbbg adult June
lbbg adult July
lbbg adult August
lbbg adult September
lbbg adult October
lbbg adult November
lbbg adult December

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

Probably, this sub-adult LBBG is in 3cy (third winter). The pinkish basal half of the bill, much black on the bill, pale yellowish legs, relatively small white mirror on p10 (arrow 1), white tertial-tips confined to the inner webs and relatively small white tips of the outer primaries are signs of immaturity. In this individual, p9 is full grown and the tip of p10 (arrow 2) has almost reached it's full length. For a 3cy LBBG, the tips of the outer primaries P6-p10) are well-developed, larger than on average.