List of Field Research tasks and rewards/2021

Please, note that there are always only either: specific amount of Stardust, or XP, or just one kind of item, or a particular Pokémon encounter for a single task completed, which means only one of following possible rewards is rewarded for single Field Research task completed not all of them!

February 2021
Shiny Hitmonlee and Hitmonchan were available since Feb 20.

April 2021
Shiny Bunnelby was available since Apr 4.

Event-only tasks
Following Field Research tasks were available during the certain events.

Community Day tasks
Following is the list of research tasks exclusively available only for the time of specific Community Days.

New Year's tasks
Following is the list of research tasks exclusively available only for the time of New Year's.

Unova Celebration Event tasks
Following is the list of research tasks exclusively available only for the time of Unova Celebration Event.

Sinnoh Celebration Event tasks
Following is the list of research tasks exclusively available only for the time of Sinnoh Celebration Event.

Hoenn Celebration Event tasks
Following is the list of research tasks exclusively available only for the time of Hoenn Celebration Event.

Johto Celebration Event tasks
Following is the list of research tasks exclusively available only for the time of Johto Celebration Event.

Sneasel Limited Research tasks
Two extra field research tasks were exclusively available only for the time of the Sneasel Limited Research.

Team GO Rocket Celebration tasks
Following is the list of research tasks exclusively available only for the time of Team GO Rocket Celebration.

Lunar New Year tasks
Following is the list of research tasks exclusively available only for the time of Lunar New Year 2021.

Valentine's Day tasks
Following is the list of research tasks exclusively available only for the time of Valentine's Day 2021.

Kanto Celebration Event tasks
Following is the list of research tasks exclusively available only for the time of Kanto Celebration Event.

Searching for Legends tasks
Following is the list of research tasks exclusively available only for the time of Searching for Legends.

Charge Up tasks
Following is the list of research tasks exclusively available only for the time of Charge Up.

Weather Week tasks
Following is the list of research tasks exclusively available only for the time of Weather Week.

Spring into Spring tasks
Following is the list of research tasks exclusively available only for the time of Spring into Spring.

Rivals' Week tasks
Following is the list of research tasks exclusively available only for the time of Rivals' Week.

Sustainability Week tasks
Following is the list of research tasks exclusively available only for the time of Sustainability Week.

New Pokémon Snap Celebration tasks
Following is the list of research tasks exclusively available only for the time of New Pokémon Snap Celebration.

Luminous Legends X tasks
Following is the list of research tasks exclusively available only for the time of Luminous Legends X.

Marill Limited Research tasks
Two extra field research tasks were exclusively available only for the time of the Marill Limited Research.

Luminous Legends Y Part 1 tasks
Following is the list of research tasks exclusively available only for the time of the part 1 of Luminous Legends Y.

Luminous Legends Y Part 2 tasks
Following is the list of research tasks exclusively available only for the time of the part 2 of Luminous Legends Y.

A Very Slow Discovery tasks
Following is the list of research tasks exclusively available only for the time of A Very Slow Discovery.

Summer Solstice tasks
Following is the list of research tasks exclusively available only for the time of Summer Solstice 2021. The tasks for Candy of the Regi-Legendary were also available after the event.