A Sussex wildlife park has welcomed the birth of one of the world's smallest monkeys. The unnamed baby pygmy marmoset, a species listed as vulnerable in the wild, was discovered by keepers at ...
From published data7 there does not appear to be a tendency for females to give birth predominantly to either same or opposite sex twins; so that these traits are unlikely to be selected by this ...
such as the common marmoset (Callithrix jacchus) and humans. In these species, group members other than the parents contribute substantially to raising the infants from birth onwards. A group of ...