Some have strong sharp talons. They can inflict serious injury and then you will be too busy getting help for the injured humans to have time for the injured bird. Contact your local, licensed wildlife rehabilitation center. They have a staff that's trained to capture the injured bird without further harm. Mammals have sharp teeth, they may have sharp claws and they may carry rabies.
Injured animals are afraid and even a harmless looking one can inflict a serious bite.
Contact your local, licensed wildlife rehabilitation center. They have a staff that's trained to capture the injured animal without further harm.