This picture would not have be possible but for the skill and Knowledge of Kas who knew of the bird rough location and knew from her birding skills what to look for.
Looks very simular to a black Headed Gull, is slightly smaller and has a black beak instead of a red beak.
Located on the Thurso River, Thurso.
I wasn't going to post this pic because the Maderin Duck pic was already on the forum.
Kas insisted i did.
This is one of the two on the pond at Thurso who are thought to be escapees.