The Evolution of Bruno Littlemore - Benjamin Hale [231]
To my right was the gorilla exhibit. That huge old magisterial silverback was still there. He was napping, slumped over limp-limbed and dejected in his rope hammock, looking as if he hadn’t moved a muscle in all the years I’d been gone, one arm resting on his massive belly and the other arm dangling down beneath him, his fat-fingered wrinkled leathery hand grazing the ground like an old work glove.
To my left was the chimpanzee exhibit. I noticed for the first time in my life that in front of the window looking into the exhibit, a row of plastic cards are held up suspended on thin metal stands, and on the cards are printed brief blurbs of educational information about my species. Several of these cards displayed color photographs of wild African chimps grooming each other, swinging in trees and so on, and another displayed a map showing where our natural habitat is, colored in red: two small blotches of red, one in Central Africa and the other on the southern coast of the gun-handle of West Africa. Like this:
On another card was written the following text:
Chimpanzee
Pan troglodytes
Mammals
Order
Primates
Description
Length: 2.5–4 feet. Weight: 125–175 pounds, males slightly larger. Zoo weights higher. Much variation in body size and proportion. Coat mostly black; short, white beard common in adults of both sexes. Baldness also occurs in adults, more so in females. Face mostly hairless and light, darkening with age. Ears large, nostrils small. Females have prominent swelling of the pink perineal region while in heat; males have very large testes. Young have white tuft of hair on rump.
Range
Western and central Africa, north of River Zaire, from Senegal to Tanzania.
Habitat
Humid forest, deciduous woodland or mixed savanna; presence in open areas depends on access to evergreen, fruit-producing trees.
Niche
Omnivorous: mainly eats fruit and leaves, but during dry season will eat seeds, flowers, bark, insects, birds and mammals. Diurnal; sleeping nests built fresh each night. Mainly terrestrial, walking on soles of hind feet and knuckles of forelimbs, but will spend time or build nests in trees (especially young), using brachiation to travel. Communities number 15–120, but feeding is usually an individual activity, especially among females. Males are gregarious and form a loose dominance hierarchy. Neighboring community ranges overlap.
Life History
Mating non-seasonal; single young born after about 9 months gestation. Young cling within a few days, ride mother at 5–7 months, are weaned at about 3 years. Mature at about 10–11 years, earlier in captivity. Females promiscuous, migrating to a new community during an adolescent estrous period. Life span 40–45 years.
Conservation Status
This species is listed as threatened and commercial trade is prohibited by international law. Principal