L. argentatus 1st-winter
L. argentatus 1st-winter

France; Ile de Re (17) 19/3/08. Pale inner-primary window on upper and underwing. Bill becomes progressively pink-based through first year

L. argentatus 1st-winter

France; Ile de Re (17) 19/3/08. Pale inner-primary window on upper and underwing. Bill becomes progressively pink-based through first year