I think the below excerpt sums up all you need to know about quail populations. But if Dr Rollins comes out and says there is nothing we can do for quail except pray for rain then his funding drys up. However, I'm all about helping so if they did determine some medicated feed would help I'd probably throw some out.
"Peoples said weather and habitat have always been the major keys that support good quail numbers. But when a population is stressed by environmental conditions such as drought or extremely high temperatures, parasites can affect overall health"