In primates, the biggest, bossiest males usually get to father the most offspring; and for a long time it was thought that this rule applied to orangutans too. Male orangutans openly compete; and it's ...
Aesthetic attraction plays a big role in orangutans' mate choice, behavioral biologist and Ph.D. candidate Tom Roth has observed. But to discover just how big that role is, more research is needed ...
Taxonomy, geographic variation, and population genetics of Bornean and Sumatran orangutans / Benoît Goossens ... [et al.] -- The functional significance of variation in jaw form in orangutans / Andrea ...