Giant black eagle near downtown

I was just walking near Union and Alexander when I noticed a massive black bird sitting on a low fence on a bit down Union.

I didn't get a good look at it, as it was chased away by a bluejay and flew towards downtown, but it was bald eagle sized and entirely black as far as I could tell.

Closest I could find is a black vulture, but I thought it was larger and had a feathered head.

Anyone seen it or have any ideas what it was? I've only seen bald eagles, red tail, and turkey vultures in the city before. This guy felt much bigger than I'd expect from a vulture, although I've not been up close to one while it was on the ground.