Pigmentation is one of the most striking examples diversity in natural world. Specifically, primate pelage (hair/fur) pigmentation provides a substrate for selection, and tied to functions such as crypsis, signaling, thermoregulation. However, our hypotheses on forces responsible are based solely macro-evolutionary studies. Here, we test how distinct around climate, age, sex might be influencin...

In cooperatively breeding species, subordinates can obtain group membership through social interactions with other members or by providing services such as helping territory defence. Large subordinate individuals, which reproduce, are expected to adjust their behaviour a function of the demand help and size because if environmental conditions allow, they may either leave start queue for positio...