​Pidgey evolution in Pokemon Let's Go keeps the same tried and true level basis from previous Pokemon titles. As one of the original bird Pokemon in the game, Pidgey, Pidgeotto and Pidgeot are iconic characters from both the game and the show. 

Here is Pidgey's evolution tree in Pokemon Let's Go.

​​Pidgey Evolution in Pokemon Let's Go

Pidgey is a Normal/Flying type Pokemon. Pidgey's evolution tree is constant across both Pokemon Let's Go Eevee and Pikachu. P​layers can catch Pidgey in Routes 1, 2, 5-8 24 and 25. Pidgey is also available in the Viridian Forest. 

Pidgey's evolution tree is as follows:

- Pidgey 

- Pidgeotto (evolves at Level 18)

- Pidgeot (evolves at Level 36)

- Mega Pidgeot (Mega Evolution using the Pidgeotite in a battle)

Pidgey, Pidgeotto and Pidgeot are three of the original 150 Pokemon released. Mega Pidgeot was introduced in Generation VI with Omega Ruby and Alpha Sapphire.

Photo courtesy of The Pokemon Company