List of Field Research tasks and rewards/2020

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!

January 2020
Theme for Field Research tasks in January 2020 was Ice-type Pokémon.

Shiny Magmar was available to be encountered since Lunar New Year 2020.

February 2020
Theme for Field Research tasks in February 2020 was Psychic-, Flying-, Fairy- and Dark-type Pokémon.

Shiny Chansey was available to be encountered since Valentine's Day 2020.

March 2020
Theme for Field Research tasks in March 2020 was Grass-type Pokémon.

April 2020
Theme for Field Research tasks in April 2020 was Grass-type Pokémon.

May 2020
Theme for Field Research tasks in May 2020 was Electric-type Pokémon. Shiny Voltorb was available since May 8.

June 2020
Theme for Field Research tasks in June 2020 was Ground-type Pokémon.

July 2020
Theme for Field Research tasks in July 2020 was Rock-type Pokémon.

August 2020
Theme for Field Research tasks in August 2020 was Fighting-type Pokémon.

September 2020
Theme for Field Research tasks in September 2020 was Psychic-type Pokémon.

October 2020
Theme for Field Research tasks in October 2020 was Ghost-type Pokémon. Shiny Vulpix was available since The Seasons Change: Part 1. Venusaur Mega Energy task was available since Oct 19.

November 2020
Theme for Field Research tasks in November 2020 was Fairy- and Dragon-type Pokémon.

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.

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

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

Valentine's Day tasks
Following is the list of research tasks exclusively available only for the time of Valentine's Day 2020. Shiny Lickitung was available since February 15.

Rocket Take-Over tasks
Following is the list of research tasks exclusively available only for the time of Rocket Take-Over mini-event on March, 2020.

A Drive to Investigate tasks
Following is the list of research tasks exclusively available to the ticket holders only for the time of A Drive to Investigate.

Psychic Spectacular tasks
Following is the list of research tasks exclusively available only for the time of Psychic Spectacular 2020.

Tricky Pokémon tasks
Following is the list of research tasks exclusively available only for the time of Tricky Pokémon. The Stunfisk task was also available for few months after the event.

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

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

Throwback Challenge: Kanto tasks
Following is the list of research tasks exclusively available only for the time of Throwback Challenge 2020: Kanto.

Throwback Challenge: Johto tasks
Following is the list of research tasks exclusively available only for the time of Throwback Challenge 2020: Johto.

Throwback Challenge: Hoenn tasks
Following is the list of research tasks exclusively available only for the time of Throwback Challenge 2020: Hoenn.

Throwback Challenge: Sinnoh tasks
Following is the list of research tasks exclusively available only for the time of Throwback Challenge 2020: Sinnoh.

Summer Solstice tasks
Following is the list of research tasks exclusively available only for the time of Summer Solstice.

Bug Out tasks
Following is the list of research tasks exclusively available only for the time of Bug Out 2020.

4th Anniversary tasks
Following is the list of research tasks exclusively available only for the time of the 4th Anniversary.

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

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

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

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

Mega Raid Challenge tasks
Following is the list of research tasks exclusively available only for the time of the Mega Raid Challenge.

Mega Battle Challenge tasks
Following is the list of research tasks exclusively available only for the time of the Mega Battle Challenge. The "Catch 5 Bug-type Pokémon" is a daily bonus task appearing automatically.

Mega Buddy Challenge tasks
Following is the list of research tasks exclusively available only for the time of the Mega Buddy Challenge. The "Catch 7 Pokémon" is a daily bonus task appearing automatically.

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

The Seasons Change tasks
Following is the list of research tasks exclusively available only for the time of the The Seasons Change.

Meowth Limited Research tasks
An extra field research task was exclusively available only for the time of the Meowth Limited Research. The rate of Kantoian Meowth was much higher than the other two.

Halloween tasks
Following is the list of research tasks exclusively available only for the time of the Halloween 2020.

Catch Mastery: Ghost tasks
Extra field research tasks were exclusively available only for the time of the Catch Mastery: Ghost.

Pokémon HOME Event tasks
Following is the list of research tasks exclusively available only for the time of the Pokémon HOME Event.

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

Nidoran♀ and Nidoran♂ Limited Research tasks
An extra field research task was exclusively available only for the time of the Nidoran♀ and Nidoran♂ Limited Research.

Trivia

 * Initially, the Alolan Vulpix task was "Hatch 7 Eggs". A bug disabled shiny Alolan Vulpix to be encountered in Research task. Niantic later removed this Research.
 * After the bug was fixed, the task was changed to hatch 5 eggs only and released again. It was changed to hatch 4 eggs only 2 days later.
 * Due to the COVID-19 pandemic, select Field Research tasks that could be difficult to finish from home are removed since March . A list can be found here.
 * The task "Win 1 Great League Trainer Battles against another Trainer" in April is written wrong, the correct requirement should be "Win in the GO Battle League". This was later fixed.