photo 4780: Yellow-legged
Gull michahellis adult & Lesser Black-backed Gull graellsii/intermedius,
September 21 2002, Dannes, France
(50.44N,01.35E).
Note the difference in primary-moult stage
(advanced in michahellis) and the contrast in upper-part colour (paler in
michahellis) between the adult and near-adult Yellow-legged Gull and the
two Lesser Black-backed Gulls in the background.
|