Seagulls are such opportunistic creatures! Pictures of seagulls snatching food even from man are all over the internet. Stories and images of seagulls being violent with other creatures can also be found in the net.
Twice I have been a witness to such seagull behavior involving an egret at Ras Al Khor Wildlife Sanctuary here in Dubai. Although the egret was much bigger, this did not hamper the seagull from trying to steal it’s catch and succeeding. I even have some shots of these two incidences…… here they are: