June 1993 – vol. 86, issue 6, pp 268–269 No prizes for identifying last month's photograph (plate 45, repeated here) as an immature gull. With no other species for comparison, its size is difficult to judge, so we must use plumage and structural characters to narrow the field. The combination of a two-tone bill, lack of a hood or dark ear-spot, and dark primaries immediately rules out all ages and corresponding plumages of all except seve... This article is only available to registered users.To read more, please log in or purchase a subscription.