This adult-basic Glaucous-winged
Gull Larus glaucescens x Western
Gull Larus occidentalis hybrid was photographed
by Michael Donahue at Edmonds, Washington in late October 1998;
the primaries look black enough for a pure Western Gull, but the
mantle is a bit too pale and the classic GWGU-like winter head
markings are all wrong:
