You see, with out the ranchers hunting the tortoise and grouse predators -- namely crows and coyotes -- the crows were left unchecked to eat the tortoises and the coyotes were left unchecked to eat the grouse eggs. Buh bye desert tortoise and sage grouse.
Oh, and the deer herds? The deer went to where the food was. The ranchers irrigated the land that the cows graze on to give the cows food and water. The deer herds benefited from the very same irrigation.
Environmentalists are responsible for the extinction of more species of animals than all "big bad corporations" combined.