Where to Find and Catch Nuzleaf
From Pokemon Go Wiki
Nuzleaf are found and captured in Nest and Habitat locations.
Nests
Nuzleaf Nests are locations that consistently spawn Nuzleaf.
Habitats
Nuzleaf Habitats are spawn locations where Nuzleaf is likely to be encountered, but not guaranteed the way a Nest is.
Additional Tips and Information
Best Nests
If you know a really good nest or any of the nests above is really good, list them here: