File:Flickr - law keven - I've got a Monkey on my back......jpg
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DescriptionFlickr - law keven - I've got a Monkey on my back......jpg |
Squirrel Monkeys - Colchester Zoo, Colchester, Essex, England - Monday July 21st 2008. 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 shoulders and yellowish orange on its back 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, "skull 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. Squirrel monkeys are sexually dichromatic, (that is the two sexes have different fur colorations) the male Squirrel monkeys have gray crown fur and the females have black crown fur. 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 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. The Common Squirrel Monkey S. sciureus is captured for the pet trade and for medical research but it is not endangered. Three squirrel monkey species are in danger of extinction. S. o. oerstedti is listed as "endangered," S. o. citrinellus is listed as "critically endangered" and S. vanzolinii is listed as "Vulnerable. |
Date | |
Source | I've got a Monkey on my back..... |
Author | Keven Law from Los Angeles, USA |
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This image was originally posted to Flickr by law_keven at https://www.flickr.com/photos/66164549@N00/2698946160. It was reviewed on 31 October 2012 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-sa-2.0. |
31 October 2012
Items portrayed in this file
depicts
some value
21 July 2008
160
0.0029411764705882 second
4.5
57 millimetre
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:44, 31 October 2012 | 1,738 × 2,203 (241 KB) | Matanya | == {{int:filedesc}} == {{Information |Description=Squirrel Monkeys - Colchester Zoo, Colchester, Essex, England - Monday July 21st 2008. The squirrel monkeys are the New World monkeys of the genus Saimiri. They are the only genus in the subfamily Sai... |
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Exposure time | 1/340 sec (0.0029411764705882) |
F-number | f/4.5 |
ISO speed rating | 160 |
Date and time of data generation | 10:22, 21 July 2008 |
Lens focal length | 57 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop Elements 2.0 |
File change date and time | 16:11, 24 July 2008 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 10:22, 21 July 2008 |
Meaning of each component |
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APEX aperture | 4.3 |
APEX brightness | 6.83 |
Exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
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Light source | Unknown |
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File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Standard |
Sharpness | Normal |
Subject distance range | Unknown |
IIM version | 2 |