The common chimpanzee and bonobo can walk upright on two legs when carrying objects with their hands and arms. The bonobo has proportionately longer upper limbs and more often walks upright than does the common chimpanzee. The coat is dark; the face, fingers, palms of the hands, and soles of the feet, hairless; the chimp, tailless. The exposed skin of the face, hands and feet varies from pink to very dark in both species but is generally lighter in younger individuals, darkening as maturity is reached.The brain of a chimpanzee has been measured at ~337 cc,~393 cc,with a general range of 282–500 cc. Human brains, in contrast, have been measured as being three times larger, variously reported volumes include ~1,299 cc,~1,158 cc,and averages of ~1330 cc and it reach puberty at an age of between eight and 10 years and rarely live past age 40 in the wild, but some have lived longer than 60 years in captivity.
The nest-building is seen in chimpanzees which construct arboreal night nests by lacing together branches from one or more trees. It forms an important part of behavior, especially in the case of mothers who teach this trait to infants. Nests consist of a mattress, supported on a strong foundation, and lined above with soft leaves and twigs, and are built in trees with a minimum diameter of 5 metres (16 ft) and may be located at a height of 3 to 45 metres (9.8 to 147.6 ft). Both day and night nests are built; they may be located in groups.chimpanzees are generally fruit and plant eaters, but they also consume insects, eggs, and meat, including carrion. They have a tremendously varied diet that includes hundreds of known foods.These are one of the few animal species that employ tools. They shape and use sticks to retrieve insects from their nests or dig grubs out of logs. They also use stones to smash open tasty nuts and employ leaves as sponges to soak up drinking water. Chimpanzees can even be taught to use some basic human sign language.for cute birds click here.....
