This unusual and distinctive definitive-cycle Common
Gull (Larus canus canus?) was present at Brouwersdam,
SW Netherlands from December 2, 1999 until February 3, 2000 (photos
by Norman Van Swelm). Some experienced
gullers in the Netherlands feel it is too different from the nominate
canus seen there (including lots from northern Scandinavia
and the occasional heinei) to be one of the Old World forms,
and suspect it to be a Mew Gull (Larus canus brachyrhynchus):
