Trainers who earn enough stamps for a Research Breakthrough will be granted the opportunity to catch the Legendary Ice- and Flying-type Pokémon Articuno.
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Conduct Water-type Research in Pokémon GO
New Field Research tasks come to Pokémon GO along with an opportunity to catch Articuno.
June 01, 2018
New Field Research tasks are coming to Pokémon GO. Starting June 1, 2018, at 1:00 P.M. (PDT), all-new Field Research tasks focusing on Water-type Pokémon will become available. Trainers who earn enough stamps for a Research Breakthrough will be granted the opportunity to catch the Legendary Ice- and Flying-type Pokémon Articuno. It’s a great way to add this powerful Legendary Pokémon to your collection!
— Pokémon News
Source: Pokémon.
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