"If Gen3 is released in the next 14 days, we can already anticipate which nests will be Gen3 nests"

#PokemonGO: Hi TSR !A new nest migration just occured and we are close to the Gen3 release (some say it can be Dec 1st, other the 8th...), and as we know from Gen2 realease and Gen3 ghosts release, everytime new pokémons are added, new nesting species will be added to the nesting species pool, which will force another nest migration. The behaviour of this "forced migration" was discovered here in TSR and you can find the whole explanation here. TL;DR from this is that Pokedex numbers are shifted by X number if new species are added to the nesting species pool.Now, based from these facts, we now know that if Gen3 is realeased before the next 14 days, a new migration will occur, and the old nesting species will "move to" new species based from their pokedex # and the number of species added.Hopefully, I found another thread that gather some good data about actual nesting species. Then, we know that :There are 88 actual nesting species. 57 from Gen1, 29 from Gen2, 2 from Gen3.There are 27 actual non-nesting species. 13 from Gen1, 13 from Gen2 and 1 from Gen3 (I think OP forgot Sableye, so let's assume it doesn't nest).There will be 64 potential nesting species added with Gen3 if we exclude legendaries, evoled forms, babies, and already released ghosts.We have to make an assumption here : how many Gen3 species will not nest. I will assume 15 here as it will follow the fact that Niantic try to have more non-nesting species (13/90 for gen1, then 13/42 for gen2), but still stay around the 13 number.Thus, the nesting species pool will have 64-15=49 new species, and a total of 137 nesting species. (36% of the total pool will be new species). According to the "forced migration" behaviour, we can assume that :Bulbasaur nests have a good chance of staying Bulbasaur nests (or maybe migrate to a Charmander nest).Nests which have the last Gen2 pokemon (Houndour #228) will now have the last Gen3 pokemon which can nest. (Beldum and Shelgon probably can't nest due to rarity, so maybe Lovdisc?)There is a breaking point between Bulbasaur and Stantler where nests will migrate to Gen3 species. If 36% of the total nesting pool are Gen3 pokemons, we can assume from the actual 88 nesting species, we have the 56 first species (64% from the pool) which will migrate to Gen1/2 species, and the last 36% will migrate to Gen3 species.With these numbers, we can say that all actual Gen1 nests (with the exception of Kabuto) will migrate to Gen1/2 nests and all actual Gen2 nests will migrate to Gen3 nests.Keep in mind that I made the assumption of the gen3 nesting species number and it might be wrong. But it is safe to say that the breaking point is somewhere between Scyther (#123) and Chinchou (#170), as they are 7 nesting species below and after Kabuto.English is not my native language, so I hope the explanation is clear enough. TL;DR : If gen3 is released in the nest 14 days :Nest with pokedex species number higher than #170 have a high chance to migrate to gen3 species.Numbers between #123 and #170 have a smaller chanceNumbers below #123 have a very low chance.EDIT : Houndour #228 is the last Gen2 nesting pokémon, and not Stantler. via /r/TheSilphRoad http://ift.tt/2ipLRzm