Quick Answer

Odin’s Ravens are best cleaned up by realm in the midgame, postgame, or during favor cleanup. Do not force every raven the first time you pass through an area.

Cleanup Order

StageAction
Main storyShoot obvious ravens, but keep moving
Favor cleanupCheck nearby ravens while doing realm quests
PostgameClear realm completion one map at a time
Platinum finishUse remaining counts to target the last gaps

Common Misses

Miss typeFix
High flight pathStop, listen, and watch the loop
Favor-only areasCheck while doing side quests
Late-opened zonesReturn after story progress
Bad viewing angleLook from entrance, exit, and high points