Litter Size

How many babies does a Western barbastelle have at once? (litter size)

How many baby Western barbastelles are in a litter?

A Western barbastelle (Barbastella barbastellus) usually gives birth to around 2 babies.With 1 litters per year, that sums up to a yearly offspring of 2 babies.

Upon birth, they weight 9 grams (0.02 lbs) and measure 4.7 cm (0′ 2″). They are a member of the Vespertilionidae family (genus: Barbastella). An adult Western barbastelle grows up to a size of 4 cm (0′ 2″).

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 Western barbastelle is 2

The western barbastelle (Barbastella barbastellus), also known as the barbastelle or barbastelle bat, is a European bat in the genus Barbastella. This species is found from Portugal to Azerbaijan and from Sweden to Canary Islands, where a sub-species was identified. It has a short nose, small eyes and wide ears. The conservation status of B. barbastellus is assessed as “Near Threatened”, “Vulnerable”, “Critically Endangered” or “Extinct” in various parts of its range.

Other animals of the family Vespertilionidae

Western barbastelle is a member of the Vespertilionidae, as are these animals:

Animals that share a litter size with Western barbastelle

Those animals also give birth to 2 babies at once:

Animals that get as old as a Western barbastelle

Other animals that usually reach the age of 21 years:

Animals with the same weight as a Western barbastelle

What other animals weight around 8 grams (0.02 lbs)?