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.

Catching Pokémon related tasks
Following tasks were related to Catching Pokémon through the Encounter Screen. To complete any of following tasks, Trainer had to successfully capture Pokémon, which was either approached in the wild, from Bonus Challenge or reward encounter for other, already completed Research task.

Throwing Poké Balls related tasks
Following tasks were related with performance of throwing any of Poké Balls when catching Pokémon.

Battle related tasks
Following tasks were related with battling in Gyms, Raid Battles, Trainer Battles or Team GO Rocket.

Other tasks
Following tasks were related with Hatching Pokémon Eggs, evolving or power-upping Pokémon, earning Candy with Buddy and other basic game actions.

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.

Catching Pokémon related tasks
Following tasks were related to Catching Pokémon through the Encounter Screen. To complete any of following tasks, Trainer had to successfully capture Pokémon, which was either approached in the wild, from Bonus Challenge or reward encounter for other, already completed Research task.

Throwing Poké Balls related tasks
Following tasks were related with performance of throwing any of Poké Balls when catching Pokémon.

Battle related tasks
Following tasks were related with battling in Gyms, Raid Battles, Trainer Battles or Team GO Rocket.

Other tasks
Following tasks were related with Hatching Pokémon Eggs, evolving or power-upping Pokémon, earning Candy with Buddy and other basic game actions.

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

Catching Pokémon related tasks
Following tasks were related to Catching Pokémon through the Encounter Screen. To complete any of following tasks, Trainer had to successfully capture Pokémon, which was either approached in the wild, from Bonus Challenge or reward encounter for other, already completed Research task.

Throwing Poké Balls related tasks
Following tasks were related with performance of throwing any of Poké Balls when catching Pokémon.

Battle related tasks
Following tasks were related with battling in Gyms, Raid Battles, Trainer Battles or Team GO Rocket.

Other tasks
Following tasks were related with Hatching Pokémon Eggs, evolving or power-upping Pokémon, earning Candy with Buddy and other basic game actions.

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.

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.