Kudaks are small gregarious creatures, roughly about the size of a rabbit. Warm blooded and covered in colorful feathers, they possess a set of wings and a keel bone necessary for flight. Large eyes help them see in low light, large ears for excellent hearing, and long thick tails for balancing in the treetops. Kudaks are oviparous and usually lay a clutch of two eggs once a year, right before the monsoon season begins. The eggs take about 24-26 days to hatch and nests may be located in large trees hollows or on cliffsides.
As frugivores, their favorite food is the tropical fruit of the nangangu tree, whose seeds they disperse widely in forested areas. They also feed on nuts and fruits of many other trees and will migrate during the change between seasons.
A kudak's long range call, used to establish territory and keep family groups together can be identified as "Koo-AHH!" Kudaks are highly social and capable of basic language but are less intelligent than fuglans and lack complex tools and technological capabilities. Some fuglans may keep them as companions, using them for long distance communication through oral messages.