>>54136132Bringing attention to this post I made earlier because i've finally been able to see a shiny and confirm it for myself:
DO NOT WASTE A MASTER BISCUIT ON A SHINY
DO NOT EVEN USE YOUR BONUS BISCUIT ON ONE
Similar to Pokemon GO raids, shiny pokemon are a guaranteed catch: they will always be hungry when in the camp, but instead of the usual 3x multiplier, feeding them ANYTHING will max out the friendship bar, meaning a single pokeball biscuit is the most optimal thing to feed a shiny.
Feed your 3-point daily biscuit to any other pokemon that arrives at the camp, you're wasting the extra friendship points by feeding a shiny that will be filled up by anything.