It has been a few years since I hunted Cimarron National Grasslands, so someone may have some more current information for you. There are pheasant, prairie chicken, bob white quail and scaled quail. I have shot all but prairie chicken there. I have a map somewhere that shows the areas where you will likely find each. The area is over 100,000 acres, so it is a big hunt.
For bob white quail, look in the Cimarron River bed(dry). There are a lot of salt cedar(tamarack) there, along with plenty of sandburs, so dog boots are a must. Some prickly pear about everywhere on the Grasslands.
For scaled quail look at the guzzlers. There are something like 95 guzzlers on the Grassland. The problem with the scaled quail is that they would rather run than flush. A guy I know that successfully hunted the scalies there shared his routine with me. They put someone as high on the truck as possible as they drive up to a guzzler. This lookout is watching for the scalies to run out of the guzzler area into the sagebrush. Once they know there are scalies there and know the direction they left, they hurrily surround the birds to keep them from running. Problem with this is that all the hunters are approaching each other. I have never shot many scalies there, but then I never have used this approach.
I do enjoy hunting the Grassland, but as I mentioned it can be rugged. Do be sure to have boots for your dog.
Good luck,
Maynard Reece
Dodge City