Black Eared
Marmoset
Order: Primates
Family: Callitrichidae
Genus: Callithrix
Species:penicillata
Range & Habitat
They live in the tropical and subtropical forests of South America and in the
forests and forest patches of Brazil's savannahs.
Reproduction & Growth
Their gestation period is 150-160 days. The male helps in carrying the young
7-10 days after birth. The young become independent in 2 1/2 months. The whole
group takes part in carrying the young and surrendering food morsels to the
baby, the breeding females and infant carriers.
Diet
In the wild: Tree sap, insects, spiders, fruit, flowers and nectar, small
lizards, bird's eggs, nestlings and frogs
In the Zoo: Bananas, apples, oranges, eggs, kale, cooked carrot or yams, monkey
biscuits, grapes, raisins, cantaloupe and mealworms
General Information
They have non-opposable thumbs and nails that are claw-like, as well as acute
eyesight, good hearing and good smell. They are diurnal and generally live in
groups of 4-15 individuals, which may include mated polyandrous groups, (one
female mates with multiple males), and their offspring. The most outstanding
feature of marmoset behavior is nonmaternal infant care (also found in other
callitrichid primates). Males and siblings are quick to assist mother marmosets
with infant care; it appears that this help is necessary for infant survival.
They are rare throughout their range. Slash and burn agriculture has destroyed
much of their habitat.