Common (or Great-tailed) Grackle; immature. I went with Common Grackle because of the rounded tail and pale-yellow eye.
Best viewed in 'original' size.
Nikon D700
,AF-S VR Nikkor 70-200mm f2.8G with TC-2.0 E II 1/640s f/5.6 at 400.0mm iso500
Free Cropped FX Image Reduced to 200 ppi for Internet Viewing
full exif