Armadillos and coyotes just about wiped them out around here. Back in the 50's, 60's, and early 70's my father bird hunted a good bit. In the vicinity of the homeplace was probably a dozen coveys scattered over a thousand acres or so (not all of it ours). As we started seeing armadillos creeping in and heard our first coyotes the bird population started dropping. Then, everybody decided they wanted to spray Round-Up anywhere they didn't have something currently growing. Fences...more and more electric fences were being used...it's a lot easier to round-up the fence-row than to sling-blade it.<sigh> Then the "everything has to be manicured" caught on with lots of people...more round-up. And, the whole time aerial crop spraying hit it's peak...poisoned bugs, seed, grit, water...aren't that healthy for birds. The Round-Up scorched-earth policy wiped out a lot of hedge-rows that supports/supported just an immense variety of wildlife and insect life. During that time the dillos and yotes showed up, kind of a coup de grace on the quail and other small native critters.
Quail were missing for a long time here. Then about two years ago I started running up on some. First a pair, then later on a small covy with 3-4 adults and about a half dozen or so chicks. The property is only used now for haying and pine tree growth...lots of brush and weeds...definitely not manicured. But, there are still lots of dillos and yotes around. Maybe time is on the side of the quail. If I see them, time is definitely not on the side of those predators.
Overhunting? I think there was more ominous reasons for the quails demise.
Ed
Quail were missing for a long time here. Then about two years ago I started running up on some. First a pair, then later on a small covy with 3-4 adults and about a half dozen or so chicks. The property is only used now for haying and pine tree growth...lots of brush and weeds...definitely not manicured. But, there are still lots of dillos and yotes around. Maybe time is on the side of the quail. If I see them, time is definitely not on the side of those predators.

Overhunting? I think there was more ominous reasons for the quails demise.
Ed