You level it up to somewhere around level 35.
In Pokemon Diamond, Staravia should evolve into Staraptor at level 34.
level 34
Staravia doesn't evolve, because of a pokemon season and there aren't seasons in Pokemon Diamond, Pearl, or Platinum either. Staravia evolves at Lv. 34
Starly evolves into Staravia at Level 15.
starly lvl15 staravia lvl34 staraptor final evoloution starly lvl15 staravia lvl34 staraptor final evoloution
When do staravia from Pokemon the d.s. game evolve.
Starly evolves at level 14 into Staravia, which then evolves into Staraptor at level 34.
staraptor
Get the Ponyta and use the fire stone on it when you are on the battle island and it should evolve into rapidash
Staravia will evolve into Staraptor at level 34. This is for Pokemon Diamond, Pearl , or Platinum Versions. The level may be different in other Pokemon versions.
evolve from staravia
by leveling it up....staravia evolves in lv 34