Grackles

A pair of Grackles. Pretty color of blue on top of their heads.

Behavior

You’ll often find Common Grackles in large flocks, flying or foraging on lawns and in agricultural fields. They strut on their long legs, pecking for food rather than scratching. At feeders Common Grackles dominate smaller birds. When resting they sit atop trees or on telephone lines, keeping up a raucous chattering. Flight is direct, with stiff wingbeats.

http://www.allaboutbirds.org/guide/Common_Grackle/id