MILD SPOILERS?: this can be found in the area before Wilson’s safe house thing, down one of the train tunnels specifically the tunnel that had the poster of the lady, ((it seemed this crow/bird will only trigger after you’ve already had your big encounter with Alice angel))

Note: this doesn’t appear before the fight ((at least from what I saw personally in my own play through)) from what I know there is no way to get into the room with the bird.