Changes related to the Pokemon Go nests were noted by fans to bring in new innovations such as the Pokemon Buddy system. Niantic said that it is constantly making improvements without necessarily revealing them publicly. Numerous users of Pokemon Go are claiming that the game's spawning nests have recently changed in a drastic manner, thus affecting what players can anticipate within their local areas.

In the Silph Road, Pokemon Go fans are firm about the occurrence of a third nest migration. Those who have located Pokemon nests in the game have found out that numerous nests do not contain the same Pokemon species that they used to have. The real explanation, about how these Pokemon nests have changed, has not been figured out yet. In the Silph Road, they are still compiling information about the kind of nests that have transformed including the type of the Pokemon that can be found in it. However, the data from the users show that these changes are random. Based on the reports from Otakukart, just like Charmander nests, some of the users have claimed that it is now changed into Jigglypuiff nests. While there are those who claim that their Charmander nests are now Diglett nests.

According to Game Rant, this switching of spawns in nests have not occurred for the first time, however it helps Pokemon Go users to gather Pokemon in their locality. These Pokemon nests changes have created opportunities for players to have a good amount of time to go and catch more types of Pokemons within their local nests. Since, some of the Pokemon eggs are region-specific; these nest changes can provide a chance for players to easily fill-in their Pokedex with other types of Pokemon, without the need to go all the way to the other parts of the world. But some players are frustrated due to these changes, it is because some of the nests which contained elusive or rare Pokemon have now transformed into more common types of Pokemons.