Ash's Talonflame is the evolved form of
Ash's Fletchinder. It evolved during a battle against Moltres at Mount Ardor. An attack was heading towards
Ash Ketchum and the others and in a burst of adrenaline to go protect them, it also triggered it to evolve.
Kalos League Finals
Alain's Unfezant was revealed in the final round of the Kalos League where it was matched up against
Ash's Talonflame. The battle took place almost entirely in the sky and they were both evenly matched up. The match didn't actually take too long and they only exchanged a few attacks until they collided together in a combination of Brave Bird and Sky Attack to knock each other out.