Fescue is allopathic meaning it will not let anything else grow and it is sod forming Little birds canot get though it if you cannot do anything but one thing for wildlife Kill the Fescue you would be suprised what will come up from the native seed bed some bad most good Joe killed fescue had birdsfoot Trefoil (good)come up that had been supressed for 15 or 20 years I think he said but it was also suppressing a crop of Nodding thistle Bad The fescue will move on you also (bad)