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
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BHG adult October
BHG adult November
BHG adult December
Below: Adult Black-headed Gull E5AY, June 26, 2010, Zoetermeer, Benthuizerplas, The Netherlands (52.076N, 4.532E). Photo: Maarten van Kleinwee.
Adult Black-headed gull, moulting to winter plumage. P1 and P2 in the left wing have been dropped (see inset) while in the right wing all primaries are still present.
Moulting score right wing: 2 (P1=0, P2=0, P3=0, P4=0, P5=0, P6=0, P7=0, P8=0, P9=0, P10=0).
Moulting score left wing: 0 (P1=1, P2=1, P3=0, P4=0, P5=0, P6=0, P7=0, P8=0, P9=0, P10=0).
(Ringing date: June 8, 2009, Benthuizerplas, Zoetermeer, The Netherlands. Sex: male. Age: unknown, older than 2nd calendar year.)
Below: Adult Black-headed Gull E5AY, July 23, 2010, Zoetermeer, Noordhovenseplas, The Netherlands (52.080N, 4.519E). Photo: Maarten van Kleinwee.
Below: Adult Black-headed Gull E5AY, July 27, 2010, Zoetermeer, Zoetermeerseplas, The Netherlands (52.080N, 4.510E). Photo: Maarten van Kleinwee.
