You must migrate from FireRed/LeafGreen or trade from Platinum.
No, in Diamond and Pearl you can't catch the legendary birds.
You can't catch articuno in pearl unless you migrate it from firered or leafgreen.
In Diamond and Pearl you can't catch Articuno.
No trainers will have articuno.
I'm sorry, but articuno isn't in pokemon pearl, it's only in pokemon platinum (talking about the ds games)
you need to catch it first in fire red/ leaf green and migrate it to pearl after you beat the Pokemon league.
In Pokemon Diamond, I found Articuno in Safari Zone, I just don't know if it works in Pokemon pearl, (Area 1)...
no but you can catch both Dialga and Palkiaalso you can catch articuno, zapdos, and moltres but so far i think you can only get certain Pokemon like in Diamond and pearl and the other old versions
You cant catch Articuno in Pokemon Crystal, only in Blue, Red and Yellow. But i am not sure about that.
You cannot catch Articuno in Pokemon Sapphire, but you can trade it from FireRed or LeafGreen.
you don't catch articuno in crystal but you can get one from red, blue or yellow.
You can catch Articuno on seafoam island whenever you don't have to beat the Pokemon League.