Mad Crow

We have heard this one crow all spring. Sometimes it is hour upon hour flying over the trees, screaming, a high pitched, "YAAAWWWWW!!!" over, and over, and over. We saw it a couple of times going after an eagle, but most of the time, it seems to be just a random thing, just yelling, at nothing in particular. Protecting a nest? Probably. Definitely a territorial issue, but man, it's so intense, a real screaching. They are not that easy to photograph on the wing, either. Crazy crows.