'Gorillas, gibbons first mammals to embrace daytime activity'
The visual acuity and colour perception of simians is comparable to those of diurnal reptiles and birds -- groups that never left the daytime niche, the researchers said.
Arunachal launches programme on conservation of gibbons
The northeastern state of Arunachal Pradesh has launched a programme on conservation of the endangered Eastern Hoolock Gibbon.
Oct 06, 2015, 12:24 PM IST