They live exclusively in The Crater, a territory that is largely unexplored by the tikedi, and keep mainly to the trees and the skies. If they venture outside of their homeland, they never stay longer than necessary before retreating again.
There is a poorly understood symbiosis between the tekk and the two massive harlech trees in which they live. They do not seem to be able to survive long away from the tree.
They are a sentient species, with a language and a culture, although very little is known about the exact workings of that culture due to their segregation from their tikedi neighbors. The two species share hunting rules and an unspoken treaty, but little else. Their language, which consists of equal parts vocalization and body language, is just as difficult to decipher.