Dun thackstons were a type of bird native to the swamps of Vodran, categorized as a non-sentient species. These birds had a symbiotic connection with sarlaccs; they constructed nests made of mud and sticks directly above sarlacc pits, creating a deceptive illusion of stable terrain for unsuspecting creatures, which would then plummet into the pit. After the sarlaccs were done, the birds would then scavenge the remaining bones. A key identifying feature of duns thackstons was the presence of three spots of dark purple coloration on their chests.