This animal breeds in the months of January and February. Female Geoffroy’s tamarins coil their tails to attract a male. Scientists have determined that some of these animals have one partner while others have several. In short, it varies from group to group. The gestation period for a female Geoffroy’s tamarin ranges from 140 to 145 days. Its gestation period is about the same as its close relative the cotton-top tamarin.
These creatures use a cavity, or hole, in a tree for shelter and as a nest to have babies. It’s a common occurrence for Geoffroy’s tamarins to give live birth to twins. A female marmoset has twins most of the time as well. Unfortunately, one twin may die within a couple months. The second baby may not be as healthy or strong as the first one. Newborn monkeys, also called infants, are born covered in mostly black hair with some white on their face. They weigh from 1.4 to 1.8 ounces at birth. A newborn that is 1.8 ounces weighs about as much as a tennis ball. They are nursed by their mother for the first couple months of life.
By 5 weeks old, the babies or infants are moving around and eating solid food by 7 weeks. The male Geoffrey’s tamarin shares in the care of the infants with the female. He carries the infants on his back and grooms their hair. It’s not unusual for older brothers and sisters in the family to help in the infant care as well. The infants are weaned by 18 weeks old and live independently at 25 weeks.
Geoffroy’s tamarins can live up to 13 years in the wild. The oldest Geoffroy’s tamarin lived in captivity for 20 years! These animals are vulnerable to intestinal parasites as they age.
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