As with all birds, hatcheries can produce them in whatever numbers the hatchery is paid to produce.
Any hatchery worth the name can turn out 20,000 Sage Grouse given funding, some fertile birds for startter stock, etc.
Enviro-commies are just grousing about the Sage Grouse population to justify another collectivization of land.
America needs to cull its population of collectivists.
I thought i read that a large part of the problem with Sage Grouse declines was the growth of cell towers and the planting of trees across the great plains as a result of the arbor day people. This has given Raptors a perch to search for prey that they never had before.