Endangered and Threatened Species of Pennsylvania |
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adults Allegheny River Allegheny River system American bitterns areas BIOLOGY-NATURAL HISTORY birds black tern blooms Boat Commission bog turtle bottom Box huckleberry breeding CAREX chemical deterioration color Conservancy IDENTIFYING CHARACTERISTICS Cornell Lab County Creek Criswell IDENTIFYING CHARACTERISTICS dark brown eggs ELEOCHARIS Endangered Species federal endangered feed females fish flowers forests frog Glade spurge gravel hatch hibernating Indiana bat insects invertebrates king rail lake sturgeon lamprey larvae least bittern locations males MANAGEMENT PRACTICES MANAGEMENT PROGRAMS Marshallia marshes monitored monkshood Nature's Images nest northern numbers Ohio orchid physical and chemical pollution PONDWEED POTAMOGETON PREFERRED HABITAT protect range REASONS regal fritillary Resource Conservation Fund riffles Rob Criswell IDENTIFYING rocks salamanders sedge wrens short-eared owl shrew shrike small-footed southern spawning SPIKE-RUSH spotted spotted darter streams Strict watershed management surveys Tall larkspur tippecanoe darter turtles Upland sandpipers upper Allegheny River USF&WS Western Pennsylvania Conservancy Wild Resource Conservation young Zappalorti