""winter biome" is back?"

#PokemonGO: When gen2 launched, in my city we were flooded with swinubs and some other winter mons (=ice)Since then, when spring arrived, they slowly disappeared and became much rarerSince a few days they seem to become more common again in this area. Am I the only one noticing this? Is there an actual "winter biome" or is it a coincidence? via /r/TheSilphRoad http://ift.tt/2m6CBBi