Rocky Mountain Trophy Wife Cow Calf Call - Produce all cow and calf mews and nasally estrus sounds that big bulls love to hear with this easy to blow and sensitive cow-calf call. The plastic barrel design produce a different sound than it's counter partner the M4 Matriarch and can easily change tones with simple lip pressure adjustments. Easy to blow and sensitive Produces all cow and calf mews and nasally sweet estrus soundsProduces excellent estrus screams Steve Chappell signature series