Yellow-legged Gull Larus argentatus/cachinnans michahelis, Dogsthorpe Star Pit, 15 October 2001
Video grabs by Brian Stone
|
PBC Gallery Yellow-legged Gull Larus argentatus/cachinnans michahelis, Dogsthorpe Star Pit, 15 October 2001 Video grabs by Brian Stone |
This Gull is in third winter plumage and shows a clearly dark back (Common Gull shade), white head with diffuse dark eye mask, dark undersides to flight feathers, dark primaries with small white "mirror" on outer primary and small white spot on underside only of next primary. At rest, the primaries extend well beyond the tail which is clean white. Legs are a dull yellowish-grey colour. It is larger than nearby juvenile Herring and adult Lesser Black-backed Gulls.
Pim Wolf comments: ...a bit more advanced in it's primary moult than the near adult with the outermost primary (p10) nearly full grown and therefore more advanced than an (average) argenteus Herring Gull would be.
An adult michahellis was also seen on 2 November 2001. Click here for pictures.
All images are copyright.
