"Dratini biome update?"

#PokemonGO: I live near a river, that spawns slowbros, ducks, and magikarps constantly. I also used to get sometimes (at least once an hour) a dratini nearby. I can confirm this is no nest, since this spawn behavior can be observed all along the river (a segment of at least 500m long). Edit: and it "survived" the 3 previous nest updatesSince the last nest migration, dratinis have disappeared from here (might have found 2 or so), which makes me wonder if the natural habitat (or the spawn rate?) of these little fellas have been updated. via /r/TheSilphRoad http://ift.tt/2ejt2LF