Full-bore roar. The male great curassow's distinctive courtship call, likened to the roar of a tiger, is so loud that it broadcasts his location far and wide. However, this call attracts the attention not just of the female object of his affection but also of human hunters. Because the curassow is monogamous, each male who falls prey to hunters means the effective loss of a breeding pair. Between hunting, habitat loss and the destruction brought about by severe weather, populations are under great pressure.