It is hard to guess what a Northern birch mouse weights. But we have the answer:
An adult Northern birch mouse (Sicista betulina) on average weights 8 grams (0.02 lbs).
The Northern birch mouse is from the family Dipodidae (genus: Sicista). They can live for up to 4 years. When reaching adult age, they grow up to 18.5 cm (0′ 8″). On average, Northern birch mouses can have babies 1 times per year with a litter size of 4.
As a reference: An average human weights in at 62 kg (137 lbs) and reaches an average size of 1.65m (5′ 5″). Humans spend 280 days (40 weeks) in the womb of their mother and reach around 75 years of age.
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.
Animals of the same family as a Northern birch mouse
We found other animals of the Dipodidae family:
- Lesser Egyptian jerboa with a weight of 59 grams
- Pacific jumping mouse with a weight of 27 grams
- Lesser fat-tailed jerboa with 5 babies per litter
- Tien Shan birch mouse with 4 babies per litter
- Bobrinski’s jerboa with 5 babies per litter
- Severtzov’s jerboa with 3 babies per litter
- Northern three-toed jerboa with a weight of 89 grams
- Greater fat-tailed jerboa with 5 babies per litter
- Mongolian five-toed jerboa with 3 babies per litter
- Gobi jerboa with 2 babies per litter
Animals with the same weight as a Northern birch mouse
As a comparison, here are some other animals that weight as much as the Sicista betulina:
- Western barbastelle bringing 8 grams to the scale
- Alpine shrew bringing 8 grams to the scale
- São Tomé free-tailed bat bringing 7 grams to the scale
- Paucident planigale bringing 9 grams to the scale
- Western long-tongued bat bringing 8 grams to the scale
- Commissaris’s long-tongued bat bringing 9 grams to the scale
- Bobrinski’s serotine bringing 7 grams to the scale
- Botswanan long-eared bat bringing 7 grams to the scale
- Schmidts’s big-eared bat bringing 7 grams to the scale
- Eurasian harvest mouse bringing 7 grams to the scale
Animals with the same litter size as a Northern birch mouse
Here is a list of animals that have the same number of babies per litter (4) as a Northern birch mouse:
- Tien Shan red-backed vole
- American mink
- Korean field mouse
- Alpine marmot
- Turkestan red pika
- American red squirrel
- Wild boar
- Lesser short-tailed gerbil
- Sandstone false antechinus
- Lataste’s gerbil
Animals with the same life expectancy as a Northern birch mouse
Completely different animals, but becoming as old as a Northern birch mouse:
- Guyenne spiny rat with an average maximal age of 4.75 years
- Berdmore’s ground squirrel with an average maximal age of 4.25 years
- Northern pocket gopher with an average maximal age of 3.75 years
- Black-footed tree-rat with an average maximal age of 3.83 years
- Striped field mouse with an average maximal age of 4 years
- Günther’s vole with an average maximal age of 3.83 years
- Banded hare-wallaby with an average maximal age of 4 years
- Long-legged myotis with an average maximal age of 4.25 years
- Steppe pika with an average maximal age of 4 years
- Small Japanese mole with an average maximal age of 3.5 years