Gray Treefrog  (Hyla versicolor)

The gray treefrog, Hyla versicolor, has a slower and much more mellow trill than the Hyla chrysoscelis, but are otherwise undistinguishable.  It has only been found in three counties in the Fort Knox area of Kentucky.  At times within this limited range, both species of gray treefrogs can be heard calling side by side throughout the warmer months of the year.  These gray/ pale green