were is he in the ruins of alph?
Natu is in the grass outside of the Ruins of Alph. You have a 90% chance of finding one. You can also find it on Route 28 and in Mt.Silver by Headbutting
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You can find natu in soulsilver in the patch of grass at the ruins of alph. Get there by taking the secret path in union cave.
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this here says that you can find it outside the ruin of alph while walking
In Heartgold and SoulSilver, Natu is located in/at: Route 28, Mt. Silver, and the Ruins of Alph.
Natu's page: http://pokemondb.net/pokedex/natu
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