Flapteryx

Black +2: Said to be an ancestor of bird Pokémon, they were unable to fly and moved about by hopping from one branch to another.

White +2: Revived from a fossil, this Pokémon is thought to be the ancestor of all bird Pokémon.

Black 2 / White 2: It was revived from an ancient fossil. Not able to fly, it lived in treetops and hopped from one branch to another.

Sun: It is the ancestor of all bird Pokémon. Archen itself could not actually fly but moved by hopping from treetop to treetop.

Moon: To all appearances flightless, it was able to glide down from tall treetops to snag its prey.

Ultra Sun: Once thought to be the ancestor of all bird Pokémon, some of the latest research suggests that may not be the case.

Ultra Moon: Restored from a fossil, this ancient bird Pokémon has wings but can’t yet fly.

Sword: This Pokémon was successfully restored from a fossil. As research suggested, Archen is unable to fly. But it’s very good at jumping.

Shield: Archen is said to be the ancestor of bird Pokémon. It lived in treetops, eating berries and bug Pokémon.