Primal Rumblings

Primal Rumblings was an event in Pokémon GO.

Featured Pokémon
These Pokémon had increased spawn rates in the wild and from Incense or Lure Modules:

These Raid Bosses were available during the event:

Exclusive move
In order to obtain Breaking Swipe, Trainers had to catch Rayquaza during the event. Trainers cannot use TMs to obtain the attacks.

Field Research event tasks
These Field Research tasks were available during the event:

Collection Challenge
To complete the Collection Challenge, Trainer must obtain these Pokémon during the event: