Chicken Soul

Find the Lost Soul Chicken in Revendreth.

As copied from @felinae's comment on the relevant post:

Chicken Soul - Gather the Spectral Feed, located at 63.75, 61.69 in Revendreth behind the stable building.
This has roughly a 60 minute respawn, and is lootable by others shortly after being looted by one player.
After, head to the Lost Soul located at 63.18, 42.76 in Revendreth.
Use /chicken on the soul, then use the Spectral Feed from your Bag. The soul may have multiple spawn points, or a separate respawn timer than the Feed, it is unknown.

/way 63.18, 42.76 Lost Soul - Chicken
/way 63.75, 61.69 Spectral Feed

WARNING: If you mis-click or don't click on the chicken soul, you walk around clucking for a bit and the chicken soul flees.