Orange Francois Langur ?

The orange colouration of the infant's fur is actually not an isolated incident. In fact, orange fur during infancy is the rule in this species and can be observed in many other monkeys. This colouration effectively advertises infancy and thus grants the infant all the protection and treatment that entails including security and feeding. The Francois' langur (Trachypithecus francoisi) care for their young communally; that is, several females care for all young regardless of specific parentage (though the orange pelage may not be a cue for alloparenting [1]). The coats gradually turn black as the infant gets older, during which time the behaviour of the group to the infant also changes. The bond between mother and offspring is broken once nursing ceases - usually around 2 years.