White-wingers

25 Apr - An extraordinary gathering of white-winged Gulls currently in fields at Wootton Bassett, 2 Glaucous and an immature Iceland Gull present this morning, all with a small flock of mixed large Gulls. The Glaucous very large birds with heavy heads and bills, and striking white primaries, whereas the immature Iceland has a much more gentle facial expression / head and smaller bill. Presumably these northern gulls are all on spring passage...... Windy, cool and showery this morning, so a brief stop at Greenham Common only produced flight views of Woodlark, and no sound of Dartford Warbler - have these been decimated by the freeze up of late winter ?