A key to solving the problem:  This is just a preliminary example of how to classify (and maybe solve) the problem.  You might try making up your own key or give suggestions.

	Turf is brown Turf is not brown Turf is turned up or there appear to be physical holes There may be below-ground animal activity such as mole crickets, grubs, moles, sometimes in combination with above-ground predators such as foxes, armadillos, black birds, etc. Turf is not turned up