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 HR 3CY, June 29 2017, Utrecht, the Netherlands.
Green tibia HR & black tibia, and metal Arnhem NLA 5.508.103. Ringed as pullus on June 28 2015, at Europoort (Dintelhaven), the Netherlands (157.00 N 406.00 E), by ringer Hans Keijser.
Recoveries:
29-6-2017 Utrecht (Papendorp), Utrecht, NL 5.204,00 N 505,00 E colourring read Mars Muusse
Mirror on P10. P1-P10 still present. Before ringing data were received for this individual, green HR was labeled "retarded 4CY June bird". The obvious white tipped central primaries and the obvious mirror on P10 indicate 3rd generation primaries, and as can be expected, these primaries are worn by June.
But the age is incorrect! By June 2017, green HR is in fact still 3CY. Are the primaries realy 3rd gen? Can 2nd gen P10 show such an obvuious mirror? Or is this bird extremely advanced and hence it must have undergone a rapid extra moult, pretty early in winter to get the wear in the primaries by June? How old is that tail? How old are these secondaries?
