Litter Size

How many babies does a Northern bat have at once? (litter size)

How many baby Northern bats are in a litter?

A Northern bat (Eptesicus nilssonii) usually gives birth to around 1 babies.With 1 litters per year, that sums up to a yearly offspring of 1 babies.

Upon birth, they weight 4 grams (0.01 lbs) and measure 3.6 cm (0′ 2″). They are a member of the Vespertilionidae family (genus: Eptesicus). An adult Northern bat grows up to a size of 8.2 cm (0′ 4″).

To have a reference: Humans obviously usually have a litter size of one ;). Their babies are in the womb of their mother for 280 days (40 weeks) and reach an average size of 1.65m (5′ 5″). They weight in at 62 kg (137 lbs), which is obviously highly individual, and reach an average age of 75 years.

The average litter size of a Northern bat is 1

The northern bat (Eptesicus nilssonii) is the most abundant species of bat in northern Eurasia. It is found from England to Hokkaidō and down to northern India. It is closely related to the serotine bat (Eptesicus serotinus).

Other animals of the family Vespertilionidae

Northern bat is a member of the Vespertilionidae, as are these animals:

Animals that share a litter size with Northern bat

Those animals also give birth to 1 babies at once:

Animals that get as old as a Northern bat

Other animals that usually reach the age of 15.5 years:

Animals with the same weight as a Northern bat

What other animals weight around 10 grams (0.02 lbs)?