Danny hit the nail on the head, magic is the only word that comes to my mind as well.
As far as the best I think the first one is simply amazing, but the rest aren't very far behind.
Man, Tim, I'd love to have any one of these in my collection, and here you post them all in one thread as if they're just another day at the office .
Those poses in #1 and 2 are just so classic and timeless! #3 shows some real power in the bank turn with talons down, and #4 is a unique crop that just perfectly showcases the colors, eyes, beak, and talons that make the bald eagle so recognizable! Awesome!