Sea Spirit's Den's Articuno .

In Pokemon X & Y, after the player clears the Hall of Fame for the first time,
the first non-cave and non-Poke Radar wild encounter the player has would be with this Pokemon.

Upon encounter, this roaming Pokemon will immediately flee, before the player can even choose to use any moves.
After a total of 11 roaming encounters, this Pokemon will relocate to the Sea Spirit's Den, awaiting battle.
If the player defeats this Pokemon in the Sea Spirit's Den, the player would have to clear the Hall of Fame and do the 11 encounters again.

The legendary bird that the player encounters depends on the starter that the player chose at the beginning of the game.
Choosing Chespin, Fennekin or Froakie will lead to an encounter with Articuno, Zapdos or Moltres respectively.

 

 

Species		Articuno
Nickname		(default, save lang)
OT		(recipient)
TID		(recipient)
Distribution		In-Game Encounter
Location		Sea Spirit's Den
Dates		(Various)
PID		Cannot Be Shiny
Games		XY

	Lv. 70

Nature		Random
Ability		Pressure
Item		None

Moves   (ITALIC means Relearnable)   Ice Beam   Reflect   Hail   Tailwind

Format Ver.1.0.6-2, Post Updated Date:20180502_1944