get the national dex then see prof oak in eterna city he'll tell you about articuno zapdos and moltres they will run around randomly use marking map to find them but dont use fly!
You can find articuno in the poketch marking app when he's all around
get them throgh pal park
The catch rate for the three legendary birds is 3 in all of the games, including Platinum.
You must migrate from FireRed/LeafGreen or trade from Platinum.
After you get the National Pokedex, Zapdos, Moltress, and Articuno will all be wandering around Sinnoh. Locate them on the Marking Map and go to where they are, but don't Fly there or they'll move.
Yes, to catch Giritina, Cresselia, and Mesprit. In Pokemon Platinum, you can catch Zapdos, Moltres, and Articuno also. :)
You can get Articuno in Pokémon Red, Blue, Yellow, Platinum, HeartGold and SoulSilver, in Red, Blue, Yellow, HeartGold and SoulSilver, you can find Articuno residing in the Seafoam Islands. In Pokémon Platinum, Articuno starts roaming around the Sinnoh region once you've spoken to Professor Oak in his place in Eterna City after you have received the National Dex and beaten Cynthia.
You must talk to oak and he will say oh there have been sightings of Zapdos, Atricuno and the other one and then you go out and catch them.
In Diamond and Pearl you can't catch Articuno.
catch Zapdos or Articuno
you don't catch articuno in crystal but you can get one from red, blue or yellow.
After You Defeat The Elite 4 You Have A Chance To Catch Moltres,Zapdos,And Articuno. They Are Running Around The Sinnoh Region And Are LV 60.