Audouin's Gull (Ichtyaetus audouinii) 4cy, August 23 2010, Malaga, S Spain. Picture: Hans Larsson.
Complete moult halfway, with P5 fully grown. P6 growing, P7 missing, P8-P10 old. Note dark centres on old outer greater coverts, which is a good indication for 4cy bird. Also: tip of the bill reddish, worn primaries with well marked white tips, and mirror on P10.