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

Lesser Black-backed Gull 2CY, July 18 2013, Katwijk, the Netherlands.

Unringed, hence no provenance about origin, but in all respects nice match to local "Dutch intergrade" Lesser Black-backed Gull.

Bird in complete moult: P5/P8. Central GC growing, GC6-GC8 which are the last to be replaced in a common moult strategy. S1 growing and S2 about to be shed. Within the next week, the outer secondaries will be dropped almost simultaneously, in small groups so leaving a large moult gap in this feather tract in summer. All rectrices, except R5, missing and growing. Central tail-feathers are longest as they were shed first and moult waves progress centrifugal outwards.

White feather that sticks out is a central undertail covert.