Lesser Black-backed Gull (graellsii & intermedius)
(last update: May 17 2015)
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 graellsii NLA 5. 504.071 2CY, August 14 2014, Utrecht, the Netherlands. Picture: Maarten van Kleinwee.
Continental graellsii from this population are also referred to as 'Dutch intergrade', upperparts between medium grey British graellsii and dark grey Scandinavian intermedius.
Ringed as pullus in June 2013.
Local bird in complete moult: P7/-. P1-P7 new 2nd gen fully grown, P8 growing, length at P6, P9 at P1, P10 missing. PMS=42. Moult in secs: S1-S3 new 2nd gen, S4-S8 growing, then few secs missing, inner secs 3x old juvenile. Rectrices: R5-R4 juvenile tail-feathers, other have been shed, now growing 2nd gen.
