Hylobates

The genus Hylobates is one of the four generating of gibbons. Its name means forest walker, from the Greekhūlē (ὕλη, forest) and Bates (βάτης, one who treads). It was once Considered the only genus, but recently its subgenera (Hoolock [formerly Bunopithecus], Nomascus, andSymphalangus) sono stati elevated to the genus level. Hylobates remains the most specious and widespread of gibbon generates, ranging from southern China (Yunnan) to western and central Java.Individuals.

Within this genus are caratterizzata by 44 chromosomes and Often have a ring of white fur around Their faces. Individuals of this kind are characterized by a set of 44 cromosomi.Con a weight ranging from 4.5 to 7 kg, gibbons of Hylobates kind are the smallest of the family. The color is very variable and can be black, brown or yellowish-gray. Sexual dimorphism is not very pronounced, with femal activity is diurnal. These gibbons lead arboreal life: locomotion happens brachiation and rarely falling to the ground. They live in small family groups, made up of monogamous pairs and offspring, with its own well definito.I territory gibbons are known for the production of processed vocalization patterns, species-specific and sex-specific. In most species of gibbons couples combine their vocalizi second constant pattern producing real duets. 

The singing of the gibbons were assigned different functions, mostly related to the control of territory and consolidation of family ties. It is an arboreal species with diurnal habits. It moves through brachiation. It is very agile, able to perform jumps from the top of another tree 12-13 m, also taking advantage of the elasticity of incurvati.Vive branches, like other gibbons, in monogamous pairs with a fixed territory. 
The other individuals of the same species have moved away from its territory with voice signals. Produces very complex vocalizi: begins his chant with the issue of isolated sounds, moans "ua-ua-ua", then accelerates the sequence, he cries more and more plaintively sincopando the lowest notes, take long high notes and ends with trills deafening. Unlike the other gibbons, the vocals do not take the form diduetti.È frugivorous, but also feeds on leaves and flowers and sometimes even small animali.In average every three years, after a seven-month gestation, the female gives birth a small, which is fed by the mother for 18 months and shall remain with their parents until they reach sexual maturity, around eight years. Gibbon Heron is one of the primates at greater risk of extinction, classified by the IUCN as endangered. It is estimated that do not survive more than 2000 individuals.