Litter Size

How many babies does a Rock vole have at once? (litter size)

How many baby Rock voles are in a litter?

A Rock vole (Microtus chrotorrhinus) usually gives birth to around 3 babies.With 2 litters per year, that sums up to a yearly offspring of 6 babies.

Each of those little ones spend around 20 days as a fetus before they are released into the wild. Upon birth, they weight 2 grams (0 lbs) and measure 1.8 cm (0′ 1″). They are a member of the Muridae family (genus: Microtus). An adult Rock vole grows up to a size of 10.7 cm (0′ 5″).

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 Rock vole is 3

The rock vole (Microtus chrotorrhinus) is a medium-sized vole found in eastern North America. It is also called the yellow-nosed vole.This species is similar in appearance to the larger Taiga vole. It has short ears and a long tail which is paler underneath. The fur is greyish-brown with grey underparts and a yellowish nose. Its length averages 15 cm (5.9 in) long with a 5-cm tail, and it weighs about 39 g (1.4 oz).They are found on moist rocky slopes in eastern Canada and the northeastern United States. They make runways through the surface growth and shallow burrows. They are usually found in small colonies.They feed on grasses, mosses, underground fungi and berries (especially bunchberry), and also sometimes on caterpillars. Predators include hawks, owls, snakes and small carnivorous mammals.The female vole has two or three litters of four to seven young. They are active year-round, mainly during the day, but are rarely seen. It has been designated as a species of concern in some parts of its range.

Other animals of the family Muridae

Rock vole is a member of the Muridae, as are these animals:

Animals that share a litter size with Rock vole

Those animals also give birth to 3 babies at once:

Animals with the same weight as a Rock vole

What other animals weight around 39 grams (0.09 lbs)?

Animals with the same size as a Rock vole

Also reaching around 10.7 cm (0′ 5″) in size do these animals: