Alright, recently got a Gale Wings Fletchling and Evolved it after ST-ing it to maxed Attack... So here goes!
Talonflame @ Roseli Berry
Ability: Gale Wings
Nature: Naughty (Sp. Defense for Attack)
EV's: 252 Attack, 252 Speed, 4 HP
Brave Bird, every Talonflame should have it, awesome STAB
Roost, Brave Bird recovery+priority recovery
Swords Dance, to boost that Attack to hyper levels
Natural Gift, to pair with Roseli Berry for a Fairy move
You can sub Roseli Berry for a Passho Berry to counter Rock types, but for that I'd use Rindo or Chople Berry. Roseli is good because no one will see it coming. If Talon could learn Recycle, you could sub S-Dance for Recycle, and the trolliest set ever. Sadly, he can't. But that would shove him to Uber in half a second.
Hope this helps!