As a 'small' project I am going through the Pokedex and either giving an evolution line a regional variant or an additional stage of evolution. Based this on the Eye of Horus
Pidgeotto (EX FireRed & LeafGreen 45) - Bulbapedia, the community-driven Pokémon encyclopedia
Pokémon Fire Red GBA: Pidgeotto evolve into Pidgeot - YouTube
Pidgeot Pokédex: stats, moves, evolution & locations | Pokémon Database