Scrub-jays also have killed and eaten mockingbirds. Birds include sandhill cranes, black and turkey vultures, northern mockingbirds, and the vulnerable red-cockaded woodpecker. Other birds may gather to watch as the mockingbirds drive away the intruder. Northern mockingbirds are famous for their song repertoires. Mutual mate choice is exhibited in northern mockingbirds. Winter storms limit the expansion of mockingbirds in their range.