Astoria Park has two fledglings in the park. Both looked like they were doing well. One was enjoying a branch of a tree, while the other was on a high diving board when I was there.
The foot up or foot out poses are quite common for Red-tailed Hawks. They aren't a sign anything is wrong, they're just shifting their weight from one foot to another.
The Triborough bridge is in the background of the last photograph.