Mega Raid Challenge

Mega Raid Challenge was an event in Pokémon GO that occured in the first week of September 2020, as part of Mega September event series.

Features
Following Friendship attack bonuses were applied in Raids during this event:

Featured Pokémon
Mega Pidgeot was unlocked on September after Trainers had won 2 million Mega Raids.

PS Pidgeot

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

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

Avatar items
These avatar items/poses were released at the start of the event:

Shop special offer
These one-time purchase offers were available from the shop during the event:

Trivia

 * The official blog made an announcement of shiny Lotad, which is done for new-released Shiny Pokémon. However, shiny Lotad had already been released in March 2019 Limited Research.