Zubat or Pidgey for Fly Pokemon in SS?
Personally i'd go for Zubat. Because it's in-game.
Zubat can learn Supersonic which is really useful in beating higher level Pokes.
It eventualy evolves into Crobat which has immense speed.
There is no point listing a Moveset because its In-Game.
I would go with Crobat Since he gains access to many great status moves, plus he evolves much quicker you should have yourself a nice Crobat by Mt.Mortar where as you get your long awaited Pidgeot about around TR Hideout. Hope I helped ^-^