Haydels Predator Compensator Owl Call. The compensator makes it user friendly in that you no longer have to manipulate your hands to create the perfect hoot. Specifications for Haydels CO03 Predator Compensator Owl Call: Mfg Item Num: CO03 Supplier SKU: 81183 Category: GAME CALLS Type: Owl Call Species: Turkey Material: Latex Battery: None The Haydels CO03 Predator Compensator Owl Call is a quality addition to the Haydels lineup. For more great deals on Turkey Calls by Haydels please browse our Haydels Hunting Gear page.