Geoffroy's tamarin (Saguinus geoffroyi), also known as the Panamanian, red-crested or rufous-naped tamarin, is a tamarin, a type of small monkey, found in Panama and Colombia. It is predominantly black and white, with a reddish nape. Diurnal, Geoffroy's tamarin spends most of its time in trees, but does come down to the ground occasionally. It lives in groups that most often number between three and five individuals, and generally include one or more adults of each sex. It eats a variety of foods, including insects, exudates, fruits and other plant parts. Insects and fruits account for the majority of its diet, but exudates are also important. But since its teeth are not adapted for gouging trees to get to the sap, it can only eat exudates when they are easily available. In common with other callitrichids (tamarins and marmosets), Geoffroy's tamarin is a small monkey. With a length of between 225 and 240 millimetres (8.9 and 9.4 in), excluding the tail, it is the smallest Central American monkey. The tail length is between 314 and 386 millimetres (12.4 and 15.2 in). Males have an average weight of 486 grams (17.1 oz), and females are slightly larger on average, with an average weight of 507 grams (17.9 oz). The fur on its back is variegated black and yellow, with pale legs, feet and chest. Its face is nearly bare, but the head has reddish fur with a triangle-shaped patch in the front of the head. The tail is chestnut-red and has a black tip. (Source: Wikipedia.org, CC BY-SA)