Yes, NB, Cardinals are the state bird of Indiana. I intentionally keep a forsythia overgrown at the back of the yard so they will have a place to roost in the winter.
We do have a Cooper's hawk in the neighborhood. I've quit feeding the birds in the back yard because of it. It seemed to be spending entirely too much time attempting to kill the Cardinals, and not enough time getting rid of the Mourning Dove population.
So, maybe since I've quit feeding the bird, the others feel safer nesting in the back yard. I think I'll just feed the birds in the winter, let them eat "natural stuff" in the summer
And, it would be neat to see the eagles on a daily basis--you're lucky.
Verna