In Perfect Equilibrium

 I can see our gull through the window. It's perched on a fence post, standing on one leg like a yogi- with its head turned backwards and its bill resting along its back. I'm thinking that its weight, fore and aft, must be in perfect equilibrium. Its eyes are open, so even though it's resting it's still watching the world....

Oh- and now it's gone. It must have spotted an opening....