@crobatman : I thrust upon you -- Pidgey / Pidgeotto / Pidgeot! It needs be the first Pidgey you run into. If you kill it, then you can try again. To evolve into Pidgeotto, it needs to KO a wild Pokemon that has attacked, and done damage, twice in a row (and nothing else) before getting KO'ed AND level up from the same Pokemon. Two evolve it again, it has to avenge Siglyph (go in after Siglyph faints and 1HKO the Pokemon that killed it.) Has to be done on a trainer.