I attended a patch burn/patch graze seminar. The brother of a friend is a wildlife area manager in Missouri. He had a power point on telemetry work they are doing on 2 wildlife areas he manages. The study compares a "biologist designed" wildlife area where the ground is broken up into 40 acre units where woody rows are next to grass strips that are next to food plots versus a wildlife area that is more of a pasture/shrub natural layout that was grazed. The first year they are finding that populations on the grass area were over double those on the designed area. The also found that nesting attempts were higher as was nesting success on the grazed system. Further, ungrazed tracts in the grazed unit were avoided by birds. Adding grazing brought an immediate return of quail and the productive increase that they were getting on the other grazed acres. Seems that the "natural" disturbance is preferred by quail. To me, this is just a logical confirmation of what we expected.