There is about a 1 in 4,000 chance a unique color variant of a Pokémon will appear in a random encounter, making “shiny Pokémon” the rarest type of monster you can capture. Some people have played Pokémon for decades and have never seen a shiny. Here’s how you can beat those odds and get a shiny in Sun and Moon.
via Kotaku http://ift.tt/2ghrf7t