 A variety of warblers is found in Leonard Harrison State Park . The Pennsylvania Audubon Society states that Pine Creek Gorge is " especially rich in warbler species , including Pine , Black @-@ throated Blue , Black @-@ throated Green , Blackburnian , and Black @-@ and @-@ white . " Many of these smaller birds are more often heard than seen as they keep away from the trails and overlooks . 
