You know crows repond very well to crow handcalls to. I've even called them in with my voice before. Don't overlook a good crow call.

Weedwacker
Indiana Predator Central

Some scientists claim that hydrogen, because it is so plentiful, is the basic building block of the universe. I dispute that. I say there is more stupidity than hydrogen, and that is the basic building block of the universe.

Frank Zappa