P.S. Olt calls out of Pekin, Illinois makes a great red tail hawk call. Its not named as such though. its called a "fox coyote call". model # T-20. the call is black and green and lookes like an acrylic. sounds exactly like a red tail hawk. you can get other strange sounds out of it too. goose, loon, flicker, pileated woodpecker....
its a really good call.
Todd perkins