Hunters Specialties Mac Daddy Herd Combo. This easy-to-use call produces the most authentic bugles and nasally cow calls. For high-pitched long-distance fightn cow calls to up-close estrus whines and calf calls youll love the Estrus Squeeze Me. And rounding out the Herd Pack is the double-reed diaphragm for realistic reliable hands-free calling. Package Contents: Hunters Specialties Mac Daddy Herd Pack Hunters Specialties HS-WCC-70377: Mac Daddy Herd Combo