Happinny is the only Pokemon that can evolve with the Oval Stone.
Happiny---->Chansey using the oval stone.
Happiny evolves using the oval stone in Pokemon Pearl. You must equip your Happiny with the oval stone and level it in the morning or in the evening to evolve into Chansey.
oval stone is for certain bird Pokemon
happiny into chansey
Give it an oval stone and level it up.
Oval stone makes Happiny evolve.
Happiny is the only Pokemon that can evolve from a Oval Stone in Pokemon Diamond, Pearl, and Platinum. You will need to max its Happiness during the morning or day, let it hold an Oval Stone, and then level it up once. It will, then, evolve into a Chansey.
an oval stone evolves happiny
The Oval Stone is an item in the Pokemon games which can be used to evolve certain Pokemon. For example, it can evolve Chansey.
You can evolve happiny with an oval stone after its friendship is high
The only Pokemon that can be evolved with an Oval stone is a Happiny into a Chancey.