Pidgey

Found on the rooftops, you need to use Rock Smash to reach the ladder that will get you up here.

Found flying above the roof here. Make your way around using the bridges from the adjacent rooftops.

Pidgeys can be found on the roof here.

Found on the rooftops.

Located on the northwestern rooftop in Bleu Sector 2. You can generally find these all around the zone though.

Perched on the railing on Magenta Street, overlooking the water.

Located on the rooftop.

Perched on a lamp post on North Boulevard.

Found on the rooftops here.

Located in the center of the water fountain.

Can spawn on the Magenta Sector 1 rooftop.

Sitting on top of the toilets.

A couple of Pidgey can be found on the railings either side of the stairs.

Located on top of the rooftop.

Located on the rooftops after climbing the ladder.

You can find Pidgeys up on this roof.

Located on the crates next to the rooftop garden above the Pokémon Center.

Located around the small park area.

Located on top of the small building on the rooftop.

Rooftop near Rust Syndicate Office.

Submitted by Niicholaii.