Brown-headed Cowbird (male).

It could be a Bronzed Cowbird but only if you are in southern TX, SE AZ, or possibly southernmost LA. I can't be sure from the photo.

Brown-headed Cowbird males have a brown head that contrasts with the black body and a dark eye.
Bronzed Cowbird males have a glossy bronzy/brown body and a red eye.

If you are in southern FL, it could also be the invasive Shiny Cowbird.

Here is a link that might be useful:

This post was edited by FHFchrish on Thu, Apr 4, 13 at 12:57

I'm in Houston, and the bird doesn't have any brown on it. I know cowbirds, and this isn't one. I'll try to get a better pic if he shows up again.

Grackle

MIght be a Common Grackle (as opposed to the more normal Great-tailed that you would see).The bird in the photo I have attached is a Common Grackle.

Boat-tailed Grackle doesn't occur in Houston (proper). In Texas Boat-taileds are found in coastal saltmarsh areas. Great-taileds are the common city grackle.

Another consideration would be a Red-winged Blackbird. I have seen individuals without the red shoulders. A photo showing the head and beak shape would help.

Both Great-tailed and Common Grackles will have light yellowish eyes (as will Brewer's and Rusty Blackbirds). Cowbirds usually have dark eyes, except Bronzed whose eyes are red. Red-winged Blackbirds have dark eyes as well.

This post was edited by FHFchrish on Fri, Apr 5, 13 at 16:37