Yep, it's fair to say they're bullies. And as this picture illustrates they've even got the better of the mighty eagle. Taken by Finnish wildlife photographer Markus Varesvuo, the shot is of a gull attacking an unwary sea eagle, mid-flight.
Born in Helsinki, the keen ornithological snapper has been capturing birds since he was a child. Thanks to advances in camera technology he has been able to take photos that show the variety of unusual bird behaviour/bullying. His new book Birds: Magic Moments is the ultimate guide to the secret world of European birds, but perhaps should be renamed Birds: Some Are Total Dicks.
To see more of Markus' work head here.
(Image: Markus Varesvuo / Nature Picture Library / Rex Features)