Gilded Wader 

Gilded Wader
Binds when picked up
Use: Teaches you how to summon this companion.
Binds when picked up
Use: Teaches you how to summon this companion.
Uncommon
Yes

Ground
Grooms feathers and idles about.
Unknown
None
3 allowed
Shadowlands
Patch 9.0.2 | Posted: October 13, 2020
Players can access special treasure chests around Bastion after completing a short quest chain that starts with Fruit of the Gods [60] at Hero's Rest.
After completing the quests, find and pick up Ripe Purians (located all around Bastion), and bring them to active chests (locations show up on the map). Interact with the tribute tray near the chest, a Steward will appear and give you a key to unlock the chest.
After completing the quests, find and pick up Ripe Purians (located all around Bastion), and bring them to active chests (locations show up on the map). Interact with the tribute tray near the chest, a Steward will appear and give you a key to unlock the chest.
Level 0:
0
0
0



1-1 of 1
1-1 of 1

I got this pet from a Runebound Chest in Maldraxxus.
I'm not sure if that's a bug or intended but that's where I got mine from, not a Silver Chest.
Wowhead has reports of it coming from other chests as well.