There is an island east of cinnibar island called seafoam islands in here you can find articuno.
You cant catch Articuno in Pokemon Crystal, only in Blue, Red and Yellow. But i am not sure about that.
Sorry, you cant catch Articuno in Pokemon Crystal, that can only in Pokemon red, blue and yellow i think.
traded from blue &/or red
You can't find Articuno in pokemondiamond but you can migrate it in pokemon leaf green version or pokemon fire red version.
If you want an Articuno on Pokemon Emerald you have to trade from Fire Red or Leaf Green. Or use a Game Shark.
The only way to get an Articuno without GS is to trade one from Pokemon Red, Blue, or Yellow.
Its weird but you can't catch articuno in silver get one from red, blue or yellow.
articuno will have about 489 health and I don't know about the level.
you don't catch articuno in crystal but you can get one from red, blue or yellow.
you trade it from fire red
you have 2 trade articuno from fire red or leaf green to your ruby game..veronica
Articuno, Moltres, Zapdos, Mewtwo and Mew.