When blowing the Governement Hunter Cottontail call, a super gravely sound is createdl. Blowing on the opposite end gets a squeaker sound for close in calling. Hyper-ventilating death cries can be accomplished by blowing and sucking air from either end.
Specifications:

Type	Predator Call
Species	All Predators
Material	Acrylic
Sound Species
Electronic	No
Battery	None
Color
Style
Proofs
Calls
Difficulty Level
Preset Features
Hands Free
Compatible With
Sounds