I've never been a one of everything kind of guy. I always thought anyone, even someone without real hunting skills, could kill one of everything. But that was before I defined what everything is.
Considering that there never has been a verified list of all upland birds constituting a "slam", each hunter determined to take a complete upland bird "slam", has been left to his own conclusion as to what an upland bird slam is. For most if not all hunters pursuing the slam, the birds I've listed below, were not included in their "slams":
Starting with migratory upland birds. I can't rationalize including woodcock as an upland game bird and somehow exclude band-tailed pigeons, snipe, sandhill cranes (2), gallinules (2), doves (3), and rails (4).
I've also included fall turkey. My criteria for inclusion is upland birds must have feathers, non-webbed feet, hunted with a shotgun and when properly motivated, they must fly. There are five species of turkey.
Then there are the two species that everyone likes to speculate about but no one wants to claim, Himalayan snowcock and chachalaca.
Who knows, maybe there may be even more species that I haven't thought of.
Well, "everyone" can't shoot one of each of these species.