Featured Species

The Chesapeake Bay Field Office is responsible for protecting threatened and endangered species and conserving at-risk species in Delaware, the District of Columbia, and Maryland. We work with other Federal agencies, state and local governments, Native American tribes, conservation organizations, and private citizens to recover these species. At-risk species are those that are: already proposed but not finalized for listing under the Endangered Species Act (ESA); candidates for listing under the ESA; or petitioned for listing under the ESA. At-risk species conservation is preventative medicine. By helping at-risk wildlife and plants early on, we can prevent the need for Federal protection.
dwarf wedge mussel
dwarf wedgemussel
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Indiana Myotis
Indiana bat
Cluster Bat
Social Bat

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...

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Northern Long-eared Bat
Northern Myotis
Northern Bat

The northern long-eared bat is a wide-ranging, federally threatened bat species, found in 37 states and eight provinces in North America. The species typically overwinters in caves or mines and spends the remainder of the year in forested habitats. As its name suggests, the northern long-eared...

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Piping Plover

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....

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red knot

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...

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yellow lance
The Yellow Lance is a bright yellow elongate mussel with a shell over twice as long as tall, usually not more than 86mm (3.4 inches) in length. Its periostracum usually has a waxy appearance with brownish growth rests and rarely ever has rays (Alderman 2003, p.6). The interior nacre is usually an...
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Chesapeake Logperch
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Frosted Elfin

The frosted elfin was originally described as Polyommatus irus by Jean-Baptiste Godart in 1824, (Johnson 1991, p. 153). The current name is Callophrys irus, and it was previously assigned to the genus Incisalia (Scudder). The similar looking Henry’s elfin (C. henrici) was not described until...

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monarch butterfly

Adult monarch butterflies are large and conspicuous, with bright orange wings surrounded by a black border and covered with black veins. The black border has a double row of white spots, present on the upper side of the wings. Adult monarchs are sexually dimorphic, with males having narrower...

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Saltmarsh Sharp-tailed Sparrow
Saltmarsh Sparrow
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Spotted Turtle
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green fiveleaf orchid
small whorled pogonia
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Canby's dropwort
Canby's cowbane
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piedmont mock bishopweed
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swamp pink
Swamp pink has smooth, oblong, dark green leaves that form an evergreen rosette. In spring, some rosettes produce a flowering stalk that can grow over 3 feet tall. The stalk is topped by a 1 to 3-inch-long cluster of 30 to 50 small, fragrant, pink flowers dotted with pale blue anthers. The...
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Virginia jointvetch
sensitive joint-vetch
northern jointvetch
The sensitive jointvetch is an annual legume native to the eastern United States. Populations currently exist in Maryland, New Jersey, North Carolina, and Virginia. The historical range for the species extended to Delaware and Pennsylvania. In Virginia, populations are found along the Potomac,...
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seaside amaranth
Seabeach amaranth
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Hay's Spring amphipod
Hay spring stygobromid
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