I have a solitary blackbird here that I think is a female Common Grackle.
The head, neck and throat are a deep iridescent green, but the body
is a very dull brown, with only a hint of purple on the primaries and tail.
Bright yellow eyes.

The tail seems on the short side and the bird keeps flicking it
up, even while it's eating. Do grackles normally flick their tails?
I can't say I've ever noticed that when a whole flock is here.

--Pat

Pat Valdata, Elkton, MD | 
"The natural function of the wing is to soar upwards
and carry that which is heavy up to the place where dwells the race of gods.
More than any other thing that pertains to the body
it partakes of the nature of the divine." --Plato