Can't wait for the next nest migration!
I track 14 nests that I can hit either while traveling to/from work, or at lunch. This last nest migration, 13 of them are gen 1 trash, and 1 is HootHoot.
This has been a really wasted 2 weeks as far as nests have been concerned.
Answers
You should probably check your town in Open streen maps, it's probably not marked properly. As long as there are some spawns, if you mark the town's parks, lakes, etc correctly you should get (at some point) nests in there.
Please be responsible with your editing, don't put anything that's not actually there!!
https://www.reddit.com/r/TheSilphRoad/comments/5y9if1/osm_and_pok%C3%A9mon_spawn_correlations/?st=j0igycxy&sh=1686cd23
The current nest migration has been a great one for me. One park changed from a Growlithe nest to currently Cyndaquil. The other park that I frequent often is a Teddiursa nest right now.
I've been grinding at both parks switching it up every other day. Catching and accumulating candy for when trading comes.