These definitive-cycle Russian Common
Gulls (Larus canus heinei) are by Norman Van
Swelm, from
Maasvlakte, Rotterdam:-
January 23, 2000:
December 10, 1998:
Found dead December 12, 1992 (with adult Kittiwake
Rissa tridactyla); measurements (by Norman Van Swelm):-
wing 395mm; head + bill 94.7mm; gonys 12mm; tarsus 54mm: