Could that be a Monk Saki Monkey?

Could that be a Monk Saki Monkey?
Originally uploaded by maujb.

Why yes as a matter of fact it is a Monk Saki Monkey, but don´t get too close or he´ll throw nuts, branches or even poop on you. This alpha-male of the clan is very protective of his family.
We also saw black mantle tamarins and lots of common squirrel monkeys and a couple other species that we can´t remember the names for but were pretty entertaining.