May's edition of the Dian Fossey Gorilla Fund newsletter has the exciting news that they're celebrating the birth of five new babies.

The year has started very well in terms of mountain gorilla births, with five newborns in the gorilla groups monitored by the Karisoke Research Center in Rwanda. Not only that, but three of the newborns were born to first-time mothers.

In scientific terms, we use the word “nulliparous” to denote females 8 years of age or older who have never given birth. After they have given birth, they are called “multiparous” females.