Clue nests are nests that can be found while training Woodcutting or emptying bird houses on Fossil Island. Searching them will give players a clue scroll of the indicated difficulty, leaving an empty Bird nest. Like clue scrolls, players can only have one of each type of clue nest in their possession.
A player cannot possess a clue scroll of the same difficulty as a clue nest. If a player already has other tiers of clue scroll in their possession, it does not increase the chance of getting a tier of clue scroll which they don't have yet.
There are four types of clue nests: