Can Darumaka be shiny in Pokemon go?
Darumaka is also available Shiny for the first time. Polygon5th Anniversary Field Research, Collection Challenge Pokémon Go guide
Can balloon Pikachu be shiny?
Flying Pikachu with the 5-shapred balloon does have a shiny form – so you might get super lucky and encounter a shiny variant. VG247Pokemon Go Flying Pikachu: how to catch the 5th anniversary balloon Pikachu