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 41 519         Pidove 18 520         Tranquill 18 521         Unfezant 18 580         Ducklett 30 581         Swanna 30 Bold indicates the Pokémon gains STAB from the move. --- indicates the Pokémon learns the move instinctively.