SOS Encounter: Vast Poni Canyon (Only in Sun & Moon), Hau’oli Cemetery (Only in Ultra Sun & Ultra Moon)
Walk: Hau’oli Cemetery (40%, Only in Ultra Sun & Ultra Moon), Vast Poni Canyon (10%, Only in Sun & Moon)
Gift: Poké Pelago (Only in Sun & Moon)
Its base catch rate is 30 out of 255 (higher is easier); the catch rate calculator works out your odds with each ball. For the look, the best colour match is Moon Ball or Ultra Ball.
Evolution: Murkrow → Honchkrow.
Murkrow in every game · Pokémon Sun, Moon, Ultra Sun & Ultra Moon interactive map (Alola)