Looks like one big happy (extended) family! Very unique capture Bob. Agree that removing the branch would greatly improve image, I'm sure the basics of that are covered in Artie's books.
I might prefer a less steep HA on the Mockingbird to see more of its eye. For alternative takes, I wouldn't mind see how the image looks with aperture wide open to blur the Eagles a bit, or perhaps with an even greater depth of field to get their eyes sharply in focus.
Talk about living dangerously! :) This is a very interesting image with 3 good head angles. I agree that the image would be much stronger with the horizontal branch removed.