How many baby Tana River mangabeys are in a litter?
A Tana River mangabey (Cercocebus galeritus) usually gives birth to around 1 babies.
Each of those little ones spend around 174 days as a fetus before they are released into the wild. Upon birth, they weight 1 grams (0 lbs) and measure 2.9 cm (0′ 2″). They are a member of the Cercopithecidae family (genus: Cercocebus). An adult Tana River mangabey grows up to a size of 51 cm (1′ 9″).
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 Tana River mangabey (Cercocebus galeritus) is a highly endangered species of primate in the family Cercopithecidae. Some authorities have included the taxa agilis and sanjei as subspecies of this species, while others award these full species status.It is endemic to riverine forest patches along the lower Tana River in southeastern Kenya. It is threatened by habitat loss and degradation, which has increased in recent years. This species was, together with the equally endangered Tana River red colobus, the main reason for the creation of the Tana River Primate Reserve in 1978, but human encroachment within this reserve continues. Recently, it has been suggested that 20,000 hectares of the Tana River Delta should be transformed into sugarcane plantations, but this has, temporarily at least, been stopped by the High Court of Kenya.
Other animals of the family Cercopithecidae
Tana River mangabey is a member of the Cercopithecidae, as are these animals:
- Delacour’s langur with 1 babies per pregnancy
- Red-shanked douc with 1 babies per pregnancy
- Gelada with 1 babies per pregnancy
- Collared mangabey with 1 babies per pregnancy
- Diana monkey with 1 babies per pregnancy
- Assam macaque weighting around 8.55 kilograms (18.85 lbs)
- Agile mangabey weighting around 7.11 kilograms (15.67 lbs)
- Pennant’s colobus with 1 babies per pregnancy
- Western red colobus with 1 babies per pregnancy
- Proboscis monkey with 1 babies per pregnancy
Animals that share a litter size with Tana River mangabey
Those animals also give birth to 1 babies at once:
- Beira (antelope)
- African savanna hare
- Egyptian slit-faced bat
- Pygmy scaly-tailed flying squirrel
- Townsend’s mole
- Madagascan rousette
- Antarctic fur seal
- Moluccan naked-backed fruit bat
- Sangihe tarsier
- Aba roundleaf bat
Animals that get as old as a Tana River mangabey
Other animals that usually reach the age of 21 years:
- South American sea lion with 24.75 years
- American marten with 19 years
- Mule deer with 22 years
- Barbary macaque with 22 years
- Hector’s dolphin with 20 years
- Common wallaroo with 24 years
- Aye-aye with 24.25 years
- Crested mona monkey with 24.08 years
- Common vampire bat with 19.5 years
- Galápagos fur seal with 22 years
Animals with the same weight as a Tana River mangabey
What other animals weight around 7.08 kg (15.61 lbs)?
- Agile gibbon usually reaching 5.85 kgs (12.9 lbs)
- Goodfellow’s tree-kangaroo usually reaching 7.98 kgs (17.59 lbs)
- Indian pangolin usually reaching 8.02 kgs (17.68 lbs)
- Asian golden cat usually reaching 7.73 kgs (17.04 lbs)
- Dusky leaf monkey usually reaching 7.18 kgs (15.83 lbs)
- Phayre’s leaf monkey usually reaching 7.69 kgs (16.95 lbs)
- Lion-tailed macaque usually reaching 6 kgs (13.23 lbs)
- Malayan porcupine usually reaching 8 kgs (17.64 lbs)
- White-bellied spider monkey usually reaching 6.71 kgs (14.79 lbs)
- Hose’s langur usually reaching 6.29 kgs (13.87 lbs)
Animals with the same size as a Tana River mangabey
Also reaching around 51 cm (1′ 9″) in size do these animals:
- Rüppell’s fox gets as big as 46 cm (1′ 7″)
- Tres Marias rabbit gets as big as 42.8 cm (1′ 5″)
- Maroon leaf monkey gets as big as 49.9 cm (1′ 8″)
- Bat-eared fox gets as big as 53.8 cm (1′ 10″)
- Riverine rabbit gets as big as 43 cm (1′ 5″)
- Red-faced spider monkey gets as big as 57.6 cm (1′ 11″)
- Brown palm civet gets as big as 58.9 cm (2′ 0″)
- Capped langur gets as big as 57.5 cm (1′ 11″)
- Golden-crowned sifaka gets as big as 47.5 cm (1′ 7″)
- Sand cat gets as big as 51.3 cm (1′ 9″)