In facultatively polygynous birds, secondary females of polygynously mated males typically have reduced annual reproductive success, because polygynous males provide less paternal care than monogamous ...

In the facultatively polygynous European starling (Sturnus vulgaris) males attract from one to four mates. Males gain by mating polygynously because they produce more offspring by doing so. This is ...

New study finds that large group size and mating systems where males have multiple mates drove evolution of deeper male voices in primates, including humans UNIVERSITY PARK, Pa. — Deeper male voices ...

How do individuals choose their mates? Why are some more successful at attracting mates than others? These age-old questions are broadly relevant to all animals, including human beings. Darwin’s ...

In a study published in the September issue of The American Naturalist, A. Kristopher Lappin (Northern Arizona University) and Jerry F. Husak (Oklahoma State University) use the eastern collared ...

During the breeding season, polygynous male pectoral sandpipers that sleep the least sire the most young. Biologists have now discovered this extraordinary relationship. During three weeks of intense ...

Polygyny has been in the public eye and many Americans’ water-cooler conversations lately, from the success of the HBO series Big Love to the trial of the Mormon sect leader Warren Jeffs. Most ...

When humans form love triangles, drama often ensues. Three-way romance tends to capture our interest, like the iconic Lancelot-Guinevere tale or more recently, that whole Jada Pinkett Smith thing. But ...