Pidgey is in the mod since v0.3.
Pidgey has been sighted in just about every biome! pokedex entry:
Pidgey is a Flying Pokémon. Among all the Flying Pokémon, it is the gentlest and easiest to capture. A perfect target for the beginning Pokemon Trainer to test his Pokémon's skills. Pidgey's Gust power creates tornadoes. It also has a Sand-Attack.