Fearow does not evolve. If it were able to evolve, it would probably evolve into Ho-Oh.
Fearow (the beak pokemon)
fearow
Spearow evolves into Fearow, starting at level 20.
Fearow does not evolve. Spearow, however, evoles into Fearow.
you can catch fearow in route 225, 226, 227 and stark mountain
At level 20.
Spearow will start to evolve into Fearow once it hits Level 20.
Shaymin does not evolve in Pokemon Diamond.
Spearow evolves at level 20 to a Fearow.
Spearow evolves into Fearow at Lv 20.
he can.
A Magikarp should evolve at about lvl 40 on Pokemon diamond