![European Herring Gull, >5cy, M[Bruxelles H152497] with mark on P4](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_tdLy9Z1LNJrI0u9MkipsRzfepSc5TiLgL59Zi6BCI98vdgt1LBs9au6yImtKN9PdFVdsmyQ7Wl8asS3Q7z1IPav67vCww8WreVXt_5bPMJD7gp-rRMFGjHA1AptyYEVtg=s0-d)
European Herring Gull (Larus argentatus), >5th calendar year
IJmuiden, June 12, 2011. Bruxelles H152497. Adult European Herring Gull, moulting to winter (basic) plumage: P1 and P2 have been shed. Note also the faint mark on the outer web of P4, something which is unusual but apparently within the range of variation. (See also Green MABK).
Primary moult score: 2 (P1=1, P2=1, P3=0, P4=0, P5=0, P6=0, P7=0, P8=0, P9=0, P10=0).
(Ring info: not available.)
Zilvermeeuw (Larus argentatus), >5de kalenderjaar
IJmuiden, 12 juni 2011. Bruxelles H152497. Adulte Zilvermeeuw, ruiend naar winterkleed: P1 en P2 missen. Opvallend is de zwarte vlek op de buitenvlag van P4, iets wat ongebruikelijk is maar klaarblijkelijk binnen de variatie valt. (Zie ook Groen MABK).
Handpenruiscore: 2 (P1=1, P2=1, P3=0, P4=0, P5=0, P6=0, P7=0, P8=0, P9=0, P10=0).
(Ringdatum: niet beschikbaar.)
