Black-headed Gull Chroicocephalus ridibundus
(last update:
Moderators:
Tim Audenaert
Maarten van Kleinwee
BHG 1cy May
BHG 1cy June
BHG 1cy July
BHG 1cy August
BHG 1cy September
BHG 1cy October
BHG 1cy November
BHG 1cy December
BHG 2cy January
BHG 2cy Febuary
BHG 2cy March
BHG 2cy April
BHG 2cy May
BHG 2cy June
BHG 2cy July
BHG 2cy August
BHG 2cy September
BHG 2cy October
BHG 2cy November
BHG 2cy December
BHG adult January
BHG adult Febuary
BHG adult March
BHG adult April
BHG adult May
BHG adult June
BHG adult July
BHG adult August
BHG adult September
BHG adult October
BHG adult November
BHG adult December
Below: Adult Black-headed Gull Helsinki ST258658, January 1, 2011, Haven, Leiden, The Netherlands (52.161N, 4.500E). Photo: Maarten van Kleinwee.
9th-Calendar year Black-headed Gull in full winter (basic) plumage, one of several ringed Black-headed Gulls spending the winter in Leiden.
This individual is recognizable by the lack of head markings: it only has a faint ear spot and no bands across the head.
Below: Adult Black-headed Gull Helsinki ST258658, February 11, 2011, Maresingel, Leiden, The Netherlands (52.164, 4.498E). Photo: Maarten van Kleinwee.
Below: Adult Black-headed Gull Helsinki ST258658, March 11, 2010, Maresingel, Leiden, The Netherlands (52.164, 4.498E). Photo: Maarten van Kleinwee.
Below: Adult Black-headed Gull Helsinki ST258658, December 14, 2010, Maresingel, Leiden, The Netherlands (52.164, 4.498E). Photo: Maarten van Kleinwee.
