A bird of prey's toenails are called talons. Talons are very sharp, hook-like appendages that are used to catch prey and balance on trees.
Raptors that spend a lot of time soaring above the ground in search of prey have long broad wings that allow them to catch rising air currents and soar through the air. Soaring saves energy because the bird doesn't have to flap its wings to stay aloft. Soaring also makes it harder for a potential meal to spot the bird of prey.