Pokémon Nests

Pokémon Nests are areas in specific geographical locations where an increased number of the same species of Pokémon appear for a short duration.

Nest migrations
Nest migrations are regular events in which a Pokémon nest changes to another location. A migration occurs every other Thursday between 0:00 UTC and 0:30 UTC. Currently, the next migration is scheduled to occur on December.

In the early weeks of the game, the migrations occurred about once a month. Since October 2016, migrations have occurred bi-weekly on a regular schedule.

Below there is list of previously occurred nests migrations.