Common Grackle

The Common Grackle is a large (nearly 12 inches) bird whose tail accounts for over half of it's total length. They are a dark black with a metallic purple, bronze, or green head and highlights on its body. These birds can decimate crops and are considered an agricultural pest.

This year, I haven't seen many of these guys although last year I had flocks of them during the early spring. They like cracked corn and sunflower seeds at backyard feeders.

Edited to add: now in mid-spring I have tons of these guys at my feeders!