Rising from its perch, a Rough-legged Hawk spread its wings wide and let the rising air carry him higher and higher without constantly flapping his wings. This is how Hawks conserve energy.
The wings provided only lift, but to stay airborne, the hawk needed some forward air movement that is simply moving air past the wings.
Hawks have predators! They are afraid of owls, eagles and crows. Snakes and raccoons steal the eggs of nesting hawks.
Life goes on.