Surprisingly, (because I have visited zoos and studied animals since I was 5,) I have never heard of this species before. I'll have to learn more about later!
By the way, You got to see this in the wild! I have only ever seen rhesus monkeys and white faced langurs in the wild. (I live in the heart Minneapolis so yeah).!
@Luke da Zoo nerd - this species used to be included with the Phayre's Langur, which you've probably heard of.
For primates, I've seen 53 species in the wild (all Asian primates). On this latest trip I added three new wild species (Agile Gibbon, for which I got no photos; Indochinese Grey Langur, of which the above was the only photo I got which was even close to passable; and Assamese Macaque, of which I got loads of photos).
What is a northern tarsier? I have heard of A lot of tarsiers but A northern tarsier? I have looking it up but there is no such thing as a northern tarsier as far as I know?