I think u have to beat the league again, then he will appear by the power plant.
Zapdos is right outside of the power plant, after you beat Red.
Yes, all 3 of them (Articuno, Zapdos and Moltres) will be in Pokémon HeartGold and Pokémon SoulSilver.
Yes you can get Zapdos in Pokemon Heart Gold. After you get all 16 badges go to the power plant and Zapdos will be waiting there for you. He is at lvl 50.
no
yes
yes, MOLTRES is in Pokemon soulsilver and heartgold. So are the other two birds articuno and zapdos
They are not in Pokemon Gold and Silver. However, they are catchable in the remakes of Gold and Silver, HeartGold and SoulSilver.
powering up the power plant and near it is zapdos
near (i think under) the power plant P.S. u spelled it wrong its zapdos
you need all 16 badges then go back to the power plant he is just there.
kyogre moltres zapdos articuno lugia ho-oh groudon scuicune entei and raikou
if you go to the power plant after you have found the missing part and beaten all the gyms he should be there.