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.
eat fish
you can find zapdos in ecrutak city
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.
If you mean how to consider yourself as beaten the kanto region in pokemon soulsilver, then you should find zapdos,moltres, and articuno. You should also beat Red (Ash Ketchum). Once you do that, you can catch Mewtwo.
power plant
Zapdos arcticuno moltres
You can find Moltres in Mt. Silver
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).
No, You must be a newbie Trainer the legendary Pokemon you can find in this game are, Articuno,Moltres, Zapdos, Mewtwo, Girtiana,Dialga,Palkia(only if the event Arceus Was obtained), Suicune, Entei, Raikou, Latias(heartgold), Latios(soulsilver), Ho-Oh, And Lugia
On Pokemon soulsilver, after winning all the gym badges, Zapdos will be waiting for you at the Power Plant.
After completing the game, go to the power plant. Zapdos should be waiting for you.
You can find Zapdos to the left of the Power Plant in Kanto. You can get there by taking the East exit out of Cerulean city until you come to the river. Ride one of your Pokemon down the river to the power plant and you should see Zapdos. BUT you have to have gotten all 16 badges for any of the legendary birds (Zapdos, Moltres, and Articuno) to appear.