eagle and bird

When I took this photo, I didn't realize that there was a small bird perched on the branch above the eagle. In fact, I didn't realize it until I started editing the photo days later. While I know some eagles do kill and eat other birds, these two seem to have a pretty clear understanding. 

​"How it is that animals understand things I do not know, but it is certain that they do understand. Perhaps there is a language which is not made of words and everything in the world understands it. Perhaps there is a soul hidden in everything and it can always speak, without even making a sound, to another soul."
-Frances Hodgson Burnett