Cooper's Hawk's eyes turn red as they mature.
Sadly, I believe this bird may have been responsible for the loss of the local female Kestrel several months after I took these shots. She was reported to have been taken by a Cooper's in front of witnesses and she has not been seen since.
At the time I took these shots, though, this bird was still perfecting it's hunting skills. I would watch it drop in low over the various ponds and try to grab one of the shore birds...but fail.
I managed to get this shot showing one of a Cooper's more distinctive features - the long, striped tail.
The rounded end/uneven tail feather lengths help differentiate it from another similar raptor known as the Sharp-shinned Hawk.