Haydels Predator Govt Hunter Jackrabbit. When blowing on the opposite end you get a squeaker sound for close in calling. Hyper-ventilating death cries can be accomplished by blowing and sucking in air from either end. Specifications for Haydels GHJ Predator Govt Hunter Jackrabbit: Mfg Item Num: GHJ Supplier SKU: 81047 Category: GAME CALLS Type: Predator Call Species: All Predators Material: Acrylic Battery: None Package Contents: Haydels GHJ Predator Govt Hunter Jackrabbit The Haydels GHJ Predator Govt Hunter Jackrabbit is a quality addition to the Haydels lineup. For more great deals on Game calls on sale and available for your next hunting trip by Haydels please browse our Haydels Hunting Gear page.