I only have about thirty minutes to spend at the Riverside Park nest this evening. While I was there both parents were close to the nest and the eyasses were fairly relaxed. I heard from other hawk watchers that the eyasses had been active earlier in the day.
The father seems to be spending much more time around the nest than a week ago. The mother also seems to be keeping a closer eye on them. I suspect that they also know that the fledge window started today and lasts through the weekend.
