July Research Breakthrough - Leek Duck | Pokémon GO News and Resources. Breakthrough research tasks - Claiming the 7th stamp vs holding out : r/TheSilphRoad. February Research Breakthrough - Leek Duck | Pokémon GO News and Resources. Infographic] LeekDuck's Research Breakthrough Rewards for May & June : r/TheSilphRoad. Pokémon GO: Latios and Latias confirmed as Field Research Breakthrough rewards- Technology News, Firstpost. March Research Breakthrough - Leek Duck | Pokémon GO News and Resources. 7-Day Research Breakthrough Reward Discovered. Research Breakthrough November and December 2019. Pokemon Go February 2022 Field Research tasks & rewards - Dexerto. Pokemon Go July Field Research - Research Breakthrough, Rewards.