Heuglin's Gull (L. heuglini / antelius)
(last update:
Larus fuscus graellsii 7A sub-adult, May 09 2006, Moerdijk, the Netherlands.
Sub-adult male, trapped on the nest. Vermillion orbital ring. Black on P4-P10. P4 minute spot. Mirror on P9. Broad sub-terminal band on P10. Much black on primary coverts (bird therefore classified 'sub-adult') and much black on the bill. Orange gape. Note dark wash on centres of secondaries and grey-shade on underwing greater primary coverts.
