I saw this bird yesterday and looked through a few books unsuccessfully. I assume this must be a juvenile but i can not find it described anywhere. Here are some details.
Saw it in Colorado Springs, CO. It was alone and eating around my feeders in the garden. I saw it eating from the ground and also eating sunflower seeds from my feeder.
It is totally black, has a black eye and black feet. The tail has white in the middle with black on the sides of the tail. It is about the size of a jay (about 9 or 10 inches). There are no other markings.
I managed to take a few photos of it. I attach one of the better ones for ID purposes. I have more if needed.
Appreciate the help.