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Litter Size

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

How many baby Northern birch mouses are in a litter?

A Northern birch mouse (Sicista betulina) usually gives birth to around 4 babies.With 1 litters per year, that sums up to a yearly offspring of 4 babies.

Each of those little ones spend around 31 days as a fetus before they are released into the wild. Upon birth, they weight 24 grams (0.05 lbs) and measure 1.6 cm (0′ 1″). They are a member of the Dipodidae family (genus: Sicista). An adult Northern birch mouse grows up to a size of 18.5 cm (0′ 8″).

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 birch mouse is 4

The northern birch mouse (Sicista betulina) is a small rodent about 5 to 8 cm long (without the tail), weighing 5 to 13 g. It lives in northern Europe and Asia in forest and marsh zones.It hibernates in burrows. It eats shoots, grains, berries, and sometimes insects.

Other animals of the family Dipodidae

Northern birch mouse is a member of the Dipodidae, as are these animals:

Animals that share a litter size with Northern birch mouse

Those animals also give birth to 4 babies at once:

Animals that get as old as a Northern birch mouse

Other animals that usually reach the age of 4 years:

Animals with the same weight as a Northern birch mouse

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