Raven Free Perk

This side quest has players spare the raven typically killed to obtain the Raven's Talon for the Dark Incantation and instead wait for it to fly its route around the map for around 3 minutes (5 laps) until it eventually poops out a Random Perk Power-Up on the Nature Path.

You do not need to follow the bird, and can continue doing other things until it drops the Random Perk Power-Up, however, this power-up does not last forever and will eventually disappear if not picked up in time.

Raven Location

To trigger the Raven to fly its route, you must first free it from the sewers just like for the Dark Incantation by taking the Cave Slide Fast Travel and shooting the bird just before exiting to the Tavern Cellar.

This Raven can be freed from outside the Tavern Cellar by using an explosive weapon or grenade to damage the bird around the wall from the sewer hole.