The male Decorah eagle chased a squirrel out of the nest today at 12:52 CST (1:52 EST). Footage of the incident is posted below in a youtube video.
The male eagle chases a curious squirrel from the nest, and then leaves. He returns soon after, and a short time later is joined by the female. They inspect the nest, and the female eagle places a stick that was moved by the squirrel back to where it had been previously. Video posted below.