Yes it will, just make sure you have room on the team.
It is in a cave
you have to battle with lv 25 Pokemon
The Frosty Forest.
in frosty forest clearing
Articuno is always were shes supposed 2 b
yes you can. Articuno is in ice cave after you deafeat zapdos. But it is extremly rare that she/he will join your team.
get a reviver seed, train good and use thunder shock on articuno. or thunder bolt
in frossy getto
You got to go to the top floor of Mt. Freeze and there you will find him. (he is at level 54).
Zapdos in mt thunder Articuno in frosty forest Moltres in mt blaze
articuno will have about 489 health and I don't know about the level.
buy his place and keep beating him in til he asks to join