If you want to get a doduo in Pokemon platinum there are two ways:
1.you can catch it in another game (Fire red leaf green etc.) then transfer it to platinum
(look in instructions on how to transfer Pokemon.)
2.you can talk to dawns sister in her house she will say that there's alot of (a type of Pokemon) at a sertain rout then if you go there youcan catch it but these inly last a single day so act fast.
problems:she might not say doduo just keep talking to her until she does.
Chat with our AI personalities
talk to dawns sister in sangem town,she might say there are doduo at route 201 dawn or lucasue which there one ( i have lucasue)
You can find doduo either at the safari zone or you can find it at cycling road.
Doduo evolves into Dodrio at level 31. http://www.serebii.net/pokedex-rs/084.shtml
Yes, it evolves in Dodrio starting at Lv31.
Doduo evolves into Dodrio, starting at level 31.