You can stop searching. 0% of Chanseys are males and 100% are females. If your looking for a male so you can breed it, I recomend you use a Ditto instead. See it for yourself : http://pokemon.marriland.com/platinum/pokedex/chansey/
Chat with our AI personalities
you cant... you have to make chansey evolve with high friendship. you can find chansy on rout 209 in diamond, pearl, and platinum
Trade it from Diamond/Pearl/Platinum, or breed a chansey while it's holding a luck incense.
you cant ,for some reason or another, you have to get Pokemon platinum and find it in the great marsh
You cant find it in platinum. Trade it from diamond or from a generation III game via pal park.
Murkrow is not in Pokemon platinum you have to trade or trade it from your diamond version