Roost

Roost
Description:	Roost restores half of the user's maximum HP. Although in the handheld, if the user is a Flying-type, it will cause the user to lose its Flying-type until the next turn, it does not seem to do so in PWO however.
Type    Flying	Category    Status	Base Power    —	Accuracy    100%
Availability Level-up - read the list of compatible Pokémon below. Move Tutor
Pokémon that learn it via level-up: # Pokémon  Level  016         Pidgey 37 017         Pidgeotto 42 018         Pidgeot 44 021         Spearow 33 022         Fearow 41 144         Articuno 57 145         Zapdos 57 146         Moltres 57 149         Dragonite --- 163         Hoothoot 53 164         Noctowl 62 206         Dunsparce 33 278         Wingull 29 279         Pelipper 31 441         Chatot 41 Bold indicates the Pokémon gains STAB from the move. --- indicates the Pokémon learns the move instinctively.