ALARM_CHARM.jpg“A high rate of calling out in alarm turns out to be one of the clearest signs of a rooster with a successful sex life, says Chris Evans of Macquarie University in Sydney, Australia. A rooster that readily gives warning calls when danger looms tends to rank high in number of times hens accept him as a mate and in number of chicks sired, Evans, David R. Wilson and colleagues report in the September Animal Behaviour.” |ScienceNews|