First of all, what is a nest? A nest is a designated place where certain Pokémon spawn. What is a nest migration? It’s when the designated spawning places of Pokémon change to different locations. Keep in mind, nests usually only generate Pokémon with low stats but they’re important because once you reach level 20, you basically become a Pokémon farm. Leveling up after level 20 is a grueling task but if you can catch a lot of Pidgeys, you can evolve them while using a Lucky Egg and receive lots of points. Also, nests can spawn more Pokemon than just Rattatas and Pidgeys. They can also yield rare Pokémon as well. I’m lucky enough to have a Jigglypuff nest near my house but after tomorrow, that might change.
According to Pokémon Go Hub,
Pokémon GO nests change every 23-24 day. The last “nest migration” happened on August 22 and today is the 23rd day since the last migration. It’s expected that the next nest migration will be starting by the end of today.
Keep in mind that nest migrations influence only Nests in the first wave. Local spawn changes and spawn frequencies follow a different pattern that loosely correlates with nest changes.
There were two recorded nest migrations in the past:
- Migration #1 on July 29, 2016
- Migration #2 on August 22, 2016
Ecumenical News has more information on Pokémon nest migration:
“Pokémon users were caught off guard when known “Pokémon GO” spawn areas were producing different breeds of Pokémon. For instance, one Redditor talked about how a Spawning Point for Ratatas and Pidgeys near his home now spawn Dratinis, Ghastlys, and Nidorinos.
There have also been reports that players have been having a far easier time catching Dragonites near the nests or habitats of Clefairy. It has also been observed that Dragonites could be found in mountainous areas or places with high elevations. There are also theories that the nest migration might have caused some nests to become Double Spawn ones.”
A lot of players are not happy about the change in Pokémon nests because it makes Pokémon farming a lot harder but whoever said being a Pokémon trainer was easy? If you want to be the very best, you have to put some work in! If you want to know where the nests are and where they migrate, the easiest way to find that information is on the Global Nest Atlas.