From Bulbapedia, the community-driven Pokémon encyclopedia.
Roost (Japanese: はねやすめ Feather Rest) is a non-damaging Flying-type move introduced in Generation IV. It was TM51 in Generation IV.
Roost restores half of the user's maximum HP. If the user is a Flying-type, it will lose its Flying-type (thus being treated as a single-type Pokémon) until the next turn. If a non-Flying-type uses Roost, then there are no side-effects.
If a Pokémon that has become a pure Flying-type uses Roost, it will become a ???-type Pokémon until the end of the turn.
If a pure Flying-type Pokémon uses Roost, it will become Normal-type until the end of the turn.
| The user lands and rests its body. It restores the user’s HP by up to half of its max HP.
|| Restores the user's HP. But if the move is used by a Flying-type Pokémon, it also loses its Flying-type designation until the next turn.
In the manga
In the Pokémon Adventures manga
In other generations
In other languages