Gull, possibly playing, Great Amwell, 2011-03-10 001

Gull, possibly playing, Great Amwell, 2011-03-10 001

Observation - Gull, possibly playing, Great Amwell, 2011-03-10 001 - UK and Ireland. Description: Gull picking up unidentified item, dropping it, picking it up again out of the water, dropping it, etc. I think this is a juvenile great black back, but I'm uncertain. Theories as to what it's up to are welcome...

Gull picking up unidentified item, dropping it, picking it up again out of the water, dropping it, etc.
I think this is a juvenile great black back, but I'm uncertain.
Theories as to what it's up to are welcome...