<< Previous Next >>

Saimiri boliviensis

Saimiri boliviensis
Photo Information
Copyright: Shir Goldberg (shirgold) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 286 W: 105 N: 591] (2748)
Genre: Animals
Medium: Color
Date Taken: 2006-07-14
Categories: Mammals
Camera: Nikon D70, 18-70 AF-S DX 3.5 - 4.5 Nikkor, SanDisk Ultra-II 1Gb
Exposure: f/4.5, 1/60 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2006-10-03 13:06
Viewed: 9021
Points: 12
[Note Guidelines] Photographer's Note
Saimiri boliviensis, one of the 5 species of Squirrel monkeys.

The image was taken in the Inti Wara refuge for wild animals in the Bolivian amazon basin. From circuses, animal dealers or homes animals are brought to the refuge for rehabilitation and liberation back into the wild. For those animals that are debilitated or captivated for an irreprievable amount of time, the refuge provides them the care they need and a home in the jungle. Almost all Work is done by volunteers.

From Wikipedia, the free encyclopedia:

The squirrel monkeys are the New World monkeys of the genus Saimiri. They are the only genus in the subfamily Saimirinae.

Squirrel monkeys live in the tropical forests of Central and South America. Their range extends from Costa Rica through central Brazil and Bolivia.

Squirrel monkey fur is short and close, colored olive at the back and yellowish orange on its belly and extremities. Their throat and the ears are white and their mouths are black. The upper part of their head is hairy. This black and white face gives them their German name, "death's head monkeys".

Squirrel monkeys grow to 25 to 35 cm, plus a 35 to 42 cm tail. They weigh 750 to 1100g. Remarkably, the brain mass to body mass ratio for squirrel monkeys is 1:17, which gives them the largest brain, proportionately, of all the primates. Humans have a 1:35 ratio.

Female squirrel monkeys have a pseudo-penis that they use to display dominance over smaller monkeys, much like the way the male squirrel monkeys display their dominance.

Like most of their New World monkey relatives, squirrel monkeys are diurnal and arboreal. Unlike the other New World monkeys, their tail is not used for climbing, but as a kind of "balancing pole" and also as a tool. Their movements in the branches are extremely speedy.

They live together in multi-male/multi-female groups with up to 500 members. These large groups can, however, occasionally break into smaller troops. They have a number of vocal calls, including warning sounds to protect themselves from large falcons, which are a natural threat to them. Their small body size also makes them susceptible to predators such as snakes and felids. For marking territory, squirrel monkeys rub their tail and their skin in with their own urine.

Squirrel monkeys are omnivores, eating primarily fruits and insects. Occasionally they also eat nuts, buds, eggs and small vertebrates.

The mating of the squirrel monkeys is subject to seasonal influences. Females give birth to young during the rainy season, after a 150- to 170-day gestation. The mothers exclusively care for the young. Saimiri oerstedti are weaned by 4 months of age, while S. boliviensis are not fully weaned until 18 months old. Female squirrel monkeys reach sexual maturity at age 3 years, while males take until age 5. They live to about 15 years old in the wild, about 20 years in captivity.

vanderschelden, dkaved, pat has marked this note useful
Only registered TrekNature members may rate photo notes.
Add Critique [Critiquing Guidelines] 
Only registered TrekNature members may write critiques.
You must be logged in to start a discussion.

Critiques [Translate]

Hi Shir,
Pity the tail is not completely there.
That said...good shot. On focus.

  • Great 
  • arfer Gold Star Critiquer [C: 2731 W: 0 N: 0] (0)
  • [2006-10-03 21:50]

Hello Shir

Excellent details and sharpness.A nicely composed photo with well saturated colours.I like the natural surroundings.TFS


  • Great 
  • manyee Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3089 W: 230 N: 6774] (23770)
  • [2006-10-04 3:30]

The squirrel monkeys were my favorite to watch while I was in Costa Rica. They are so beautiful and so graceful in their moves. Unfortunately, try as I mght, I was not able to get a single decent picture of them.
Congratulations on your wonderful capture. I like the pose, the eye contact, and the sharp details and beautiful colors.
TFS. : )

Beautiful animal.
The light is very good, great exposure.
Great composition, POV and sharpness.

  • Great 
  • dkaved Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 259 W: 17 N: 431] (2114)
  • [2006-10-09 15:44]

Hi Shir,
I like this one a lot.Sad to hear that the animals were once in a sorry state but feel better knowing there are such giving and caring people to nurse them back.He indeed is a cute chap...looks mischievous and inquisitive...a lovely pose.The clarity is very good and you left the colours natural.
Good work mate....well done!
Regards, David

  • Great 
  • pat Gold Star Critiquer/Gold Note Writer [C: 87 W: 0 N: 125] (414)
  • [2006-10-11 15:26]

Hi Shir,
Thanks to take us all to this wild refuge with you. You are right these animals deserve all possible attention to get back to the wilderness.
Perfect capture, much dynamic composition, as its eyes dart out of the picture ready for the next jump.

Calibration Check