Murkrow, the darkness Pokémon from Johto, can be found in the wild in Pokémon Go. Yes, Murkrow can be shiny in Pokémon Go!
Honestly, Honchkrow is not a terrible option for both a dark- and flying-type attacker, if you have no better choices. It’s even better with its shadow form, where it’s strangely reliable. These witch birds have some use outside of having a great shiny, afterall!
What is the shiny rate for Murkrow in Pokémon Go?
As per old research by the now-defunct website The Silph Road (via Wayback Machine), the shiny rate for Pokémon on a regular day is approximately one in 500. Murkrow is not a confirmed Pokémon that gets a “permaboost” (meaning that it’s a rare spawn and thus gets a boosted shiny rate).
What can I do to attract more shiny Pokémon?
Not much, unfortunately. It appears to be random chance. Shiny Pokémon catch rates are set by developer Niantic, and they are typically only boosted during special events like Community Days or Safari Zones, or in Legendary Raids. There are no consumable items that boost shiny Pokémon rates.