February 21st, 2012, 01:27 PM
Help from Larophiles please
This bird is paired with a Herring Gull but have a look at the legs photo does not really do it justice.They are bright Yellow it is obviously not a Yellow Legged Gull the only thing I can come up with is Baltic Herring Gull if it was a hybrid I would assume it would still be a shade darker
February 22nd, 2012, 08:18 AM
I have seen Herring Gulls in the peak of their breeding condition where their legs turn yellow for a few days - I guess that it is hormonal. A similar thing happens with Great White Egrets where their legs turn bright red. Theoretically, some kind of hormonal imbalance (caused by a toxicological effect or disease) might be able to make the legs appear yellow if nothing else suggests any thing other than bog standard argenteus.
Edit: The brightness of the gonys and deep red eye ring might support this theory
Last edited by Odonate; February 22nd, 2012 at 08:20 AM.
February 22nd, 2012, 08:46 AM
Still not sure this bird has been present for several weeks now and the legs have been the same all the way through