Gibbons are family animals The father and mother live together with their children. The 'kids' like playing together. The youngest learn from their older brothers and sisters. A new baby gibbon is usually born into the family every two years. This baby will only leave the parental nest after seven years. That is when they become sexually mature.
Start the Day with a Song
The male gibbon starts singing early in the morning. Not much later the female joins in. Together they sing higher and faster until they reach a peak in a melodious duet. The father and mother's duets make it clear to other gibbons where their territory is.
Paired Off Sooner
Young males try to impress the females by singing. A good singer will find a partner and get their own territory sooner. Because lumberjacks are cutting down the Asian rainforest, unfortunately you can now hear less and less singing in the trees.