No you can't. It evolves by leveling up.
No, using a Fire Stone on Pidgey will not evolve it into Moltres. Pidgey evolves into Pidgeotto which then evolves into Pidgeot. Pidgey does not have additional evolutions.
Pidgey don't evolve using a stone, they evolve by level.
Pidgey will evolve twice as on other games, at lvl 18 Pidgey evolves into Pidgeotto, and at lvl 36 Pidgeotto will evolve into Pidgeot.
Pidgey evolves at level 18 into Pidgeotto. Then at level 36 Pidgeotto evolve in Pigeot!!!
Pidgey evolves into Pidgeotto at level 18. Then at level 36 it will evolve again to Pidgeot.
No matter the game, pidgey will always evolve at level 18.Pidgey evolve at LV 18 into pidgeotto and then again at LV 36 in Pidgeot
your pidgey will evolve at level 18 and your pigeotto will evolve at lv 36
pidgey doesn't evolve with a stone, it evolves by leveling it up.
Pidgey evolves at level 18.
With a Firestone you can evolve into a Eevee into a Flareon, A Vulpix into a Ninetails and a Growlithe into a Artacaine
Pidgey evolves at level 18. When you evolve it at level 18, it evolves again at lvl 36.
Pidgey evolves into Pidgeotto (level 18) and then Pidgeot (at level 36).