What is bimaturism?

Answer 1

Bimaturism means that there are two distinct forms a mature animal can take. For example, orangutans that have established territory develop large facial flanges and other secondary sex characteristics that unestablished males do not. Wikipedia refers to this as bimodal male development: http://en.wikipedia.org/wiki/Orangutan#Ecology_and_appearance However, most primatologists refer to this as bimaturism.