Large predator dark color with red ring around neck

by Cheri
(Indiana)

Hello, I had 2 of these on my drive when my house was being built. Sorry, no picture was taken. They were eating a turtle and stepped aside looking annoyed that I interrupted dinner. Very large. They could look in my car window as I drove past. They were not scared. I cant remember much just had very haughty look, beautiful, mostly black (cannot remember underside or breast color), red ring around neck. Legs were very feathery. I thought it might have been a type of eagle or hawk. Definitely not a turkey vulture or other type as they are ugly. Thoughts ?