mother and grooming or mating partner. See also interfere copulation. 5. See video. W whimper Goodall: A whole series of soft, low pitched sounds, rising and falling in pitch, which may lead to crying and screaming Whimper by male infant may elicit presentation by estrous female, so serving as courtship display. Estrous female may whimper to adult male for copulatory solicitation. Cf. hoo. Bonobos call similarly. See video. whimper-scream 205 whimper-scream Goodall Cry: A combination of loud whimpers and tantrum screaming. This is commonly heard when an infant is separated from mother. At Mahale, weaning infant, especially if weaned when unusually young, whimper-screams continuously throughout mothers estrous periods. Lost call of bonobos seems distinct from that of chimpanzees in acoustic nature, and both mature and immature individuals emit