Pennsylvania Ecological Services Field Office

A large raptor, the bald eagle has a wingspread of about seven feet. Adults have a dark brown body and wings, white head and tail, and a yellow beak. Juveniles are mostly brown with white mottling on the body, tail, and undersides of wings. Adult plumage usually is obtained by the sixth year. In...

Size: 18 cm (7.25 in) in length. Color: Breeding season: Pale brown above, lighter below; black band across forehead; bill orange with black tip; legs orange; white rump. Male: Complete or incomplete black band encircles the body at the breast. Female: Paler head band; incomplete breast band....

Length: 25-28 cm. Adults in spring: Above finely mottled with grays, black and light ochre, running into stripes on crown; throat, breast and sides of head cinnamon-brown; dark gray line through eye; abdomen and undertail coverts white; uppertail coverts white, barred with black. Adults in...

The Indiana bat is a medium-sized Myotis, closely resembling the little brown bat (Myotis lucifugus) but differing in coloration. Its fur is a dull grayish chestnut rather than bronze, with the basal portion of the hairs on the back a dull-lead color. This bat's underparts are pinkish to...

Massasaugas are small snakes with thick bodies, heart-shaped heads and vertical pupils. The average length of an adult is about 2 feet. Adult massasaugas are gray or light brown with large, light-edged chocolate brown blotches on the back and smaller blotches on the sides. The snake's belly is...

The clubshell is a small to medium size (up to 3 inches long) freshwater mussel that was listed as endangered, without critical habitat, in 1993 (58 FR 5638-5642). Its shell exterior is yellow to brown with bright green blotchy rays and shell interior is typically white. The shell is wedge...

The green floater is a small freshwater mussel found in small streams and large rivers in the eastern United States. It is historically native to the District of Columbia and 10 states: Alabama, Georgia, Maryland, New Jersey, New York, North Carolina, Pennsylvania, Tennessee, Virginia, and West...

In 1831, Isaac Lea described the longsolid, a medium-sized mussel, up to five inches long, which potentially live up to 50 years.  It is found in small streams to large rivers, and prefers a mixture of sand, gravel, and cobble substrates.

The mussel is found in Alabama, Kentucky,...

The northern riffleshell is a small to medium size (up to 3 inches long) freshwater mussel that was listed as endangered, without critical habitat, in 1993 (58 FR 5638-5642). Its shell exterior is brownish yellow to yellowish green with fine green rays. The shell interior is typically white. The...

The round hickorynut mussel is a wide-ranging species, historically known from 12 states, though now occurs in nine, as well as the Canadaian Province of Ontario.  It is currently found in five major basins: Great Lakes, Ohio (where it is most prevalent), Cumberland, Tennessee, and Lower...

Shell surface: Many low, wide bumps run in a single file line down the outer shell surface, from the beak (the swelling above the point where the 2 shell halves join) to the opposite shell edge. The rest of the shell surface is smooth (without bumps), and looks slightly pressed-in from the beak...

The snuffbox is a small- to medium-sized mussel, with males reaching up to 2.8 in (7.0 cm) in length (Cummings and Mayer 1992, p. 162; Parmalee and Bogan 1998, p. 108). The maximum length of females is about 1.8 in (4.5 cm) (Parmalee and Bogan 1998, p. 108). The shape of the shell is somewhat...

Historically, the rusty patched bumble bee was broadly distributed across the eastern United States, Upper Midwest, and southern Quebec and Ontario in Canada. Since 2000, this bumble bee has been reported from only 13 states and 1 Canadian province: Illinois, Indiana, Iowa, Maine, Maryland,...

The small whorled pogonia is a member of the orchid family. The plant is named for the whorl of five or six leaves near the top of the stem and beneath the flower. The species is listed as threatened under the Endangered Species Act. 

Northeastern bulrush, first described as a new species by A.E. Schuyler in 1962, is a leafy, perennial herb approximately 80-120 centimeters in height. The lowermost leaves are up to 8 millimeters (mm) wide and 40-60 times as long as wide, while the uppermost leaves are 3-5 mm wide and 30-50...