If I were a true naturalist I would know the name of the gulls like this one, who pair up with pelicans and steal the hard-earned food right out of their mouths.
They're waiting for the moment the pelican, fresh from a deep dive, tosses its catch from its pouch and down its gullet. It's an unguarded instant during which the gull snatches the catch in midair, robs the big bird of its prize.
Here's our pelican friend, getting ready to hopscotch over the gull and take off. My favorite part of the shot is that splash of water and the pelican's feet, flat and wide, poised to slap the water and splash the gull and, for a moment anyway, fly free of freeloaders.