In Pearl, you can neither find Zapdos, nor Moltres. To get them in Pearl, you'll have to trade or migrate. You can find them in FireRed/LeafGreen, Platinum, HeartGold/SoulSilver and X/Y. If you migrate them from FireRed/LeafGreen, you'll find both of them in the mountain area at Pal Park.
eat fish
You can't get Zapdos on Pokemon Pearl or Diamond but you can migrate it from Pokemon LeafGreen or Pokemon FireRed.
Zapdos arcticuno moltres
In Pokémon Blue you can find Articuno (on the Seafoam Islands), Zapdos (at the Power Plant), Moltres (in Victory Road) and Mewtwo (in the Cerulean Cave).
You can find Moltres in Mount Silver, and you can find Zapdos on Route 10 after you have all 16 badges. If you want more information about Pokemon, you should look it up on Bulbapedia. They are a very accurate and thorough source of information.
No but with Action Replay you can.
in seafoam islands,power plant,and mount ember
proffessor rowan will give you a app to find : zapdos articuno moltres
You will find Moltres in the Final Maze in Marowak Dojo, Zapdos in Amp Plains, and Articuno on Ice Mountain or something like that.
In Pokémon LeafGreen Articuno can be found in the Seafoam Islands, Zapdos can be found in the Power Plant and Moltres can be found with One Island's Mt. Ember.
well, you can get glameow wearas in dimond there is stunky. also, you can get palkia, shaymin, zapdos, moltres, articuno, cressilya, azelf,mespirit,uxie and heatran (some of the legendries you can find in diamond and platinum.) hope this helps!
Without cheats or any events they are Moltres Articuno Zapdos And Mewtwo