Increased predation on non-target species such as quail is one of the drawbacks to supplemental feeding of deer. The feeders attract quail, but they also attract predators, anything from hogs to coons, to snakes, who can hit the nests pretty hard.

Dedicated quail feeders can be put out. There are some available where the birds have to actually go under the feeder to get the feed. Thsi keeps them relatively safe from hawks.

Also, if I remember right their normal body temp is something like 106 degrees. If they have to constantly evade predators in the Texas heat, once their temp reaches close to 116 they are pretty much done for, either from over heating or the predator gets them. I could be off on the numbers a little but heat can kill them really quick.