Head and body length: 22.5 0 24 cm, tail: 33 - 40 cm
411 - 430
Estimated at 6,000
Endemic to northwestern Colombia; found in rainforest, deciduous forest and secondary forest
Share and share alike. It's a motto cotton-top tamarins embody, as they share much more than a striking white topknot and mane. They share food liberally, especially feathers with offspring and older siblings with younger ones. They divvy up guard duty, with one keeping watch while the others forage. And they work together in defending their turf with vocal and physical displays; males fluff up their hair menacingly, approach invaders and attack, while females scent-mark territory. But these cooperative creatures also share perils of habitat loss and capture for the pet trade, which are taking a heavy toll on populations.