Lesser Black-backed Gull (graellsii & intermedius)

(last update: May 17 2015)


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 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
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 Nov - Dec

LBBG 3cy, July 07 2001, IJmuiden, the Netherlands.

A 3cy LBBG showing arrested moult in the primaries (moulted to third generation up to P6). Grey tone of the upper-parts is in line with immature graellsii and Dutch intergrades and probably too pale for intermedius and fuscus. The tail has the central tail feathers replaced by fresh white feathers. Some fresh third generation tail-feathers still have black central markings. The dark iris and black ring on the bill are common features in 3cy LBBGs. Note the pale yellow legs. Last spring 2001, over 35 birds showing arrested moult have been encountered in the Netherlands. Intermedius/graellsii may show arrested moult in some 3-4% of immature individuals: in most cases (presumed) 3cy. For more images of LBBGs with arrested moult:

- one seen at IJmuiden,
- another seen at IJmuiden,

- birds from the Maasvlakte (the Netherlands) in May 2001,
- a sub-adult in June at the Maasvlakte colony,

- birds at Le Portel (France) on the beach in May,

- possible fuscus at Dannes (France).