A range of pokemon, such as smoochum doduo voltorb nidoran electrike and more
In Pokemon Diamond and Pearl, Phanpy swarms on Route 207.
Unfortunately, there are no swarms on HeartGold and SoulSilver, only on Diamond, Pearl and Platinum.
The safari zone has some. There are swarms of different Pokemon that come each day, you have to listen to the Professor Oak's talk show and he will tell you what Pokemon has come that day and where. Trade in from Diamond and Pearl.
migrate from previous games and talk to dawn's sister for swarms
trade diamond from Pokemon diamond onto Pokemon pearl
You trade Magmar from Pokemon pearl,diamond,or platinum to ether Pokemon pearl,diamond,or platinum.
THE POKEMON THAT ARE NOT FOUND IN DIAMOND AND PEARL ARE:MANAPHY PHIONE
You can get Palkia in Pearl, otherwise you have to transfer Palkia from Pokemon Pearl to Pokemon Diamond.
diamond
No, you can't catch Deoxys on Pokemon Diamond & Pearl unless you have cheats. You can transfer it from your GBA to Pokemon Diamond and Pearl though
some of the Pokemon are different such as diamond has dialga and pearl has palkia some of the Pokemon are different such as diamond has dialga and pearl has palkia
During a swarm in Lake Valor. Swarms change daily and you can look up what the current Swarm Pokemon is at Dawn's or Lucas's sister in Sandgem Town (depending on which gender you chose).