Glenn Martin National Wildlife Refuge includes the northern half of Smith Island (in

Somerset County, Maryland Somerset County is the southernmost county in the U.S. state of Maryland. As of the 2020 census, the population was 24,620, making it the second-least populous county in Maryland. The county seat is Princess Anne. The county was named for Mary, ...

), which lies west of

Crisfield, Maryland Crisfield is a city in Somerset County, Maryland, United States, located on the Tangier Sound, an arm of the Chesapeake Bay. The population was 2,515 at the 2020 census. It is included in the Salisbury, Maryland-Delaware Metropolitan Statisti ...

, and Watts Island (in

Accomack County, Virginia Accomack County is a United States county located in the eastern edge of the Commonwealth of Virginia. Together, Accomack and Northampton counties make up the Eastern Shore of Virginia, which in turn is part of the Delmarva Peninsula, bordered ...

), which is located between the eastern shore of

Virginia Virginia, officially the Commonwealth of Virginia, is a state in the Mid-Atlantic and Southeastern regions of the United States, between the Atlantic Coast and the Appalachian Mountains. The geography and climate of the Commonwealth ar ...

and

Tangier Island Tangier is a town in Accomack County, Virginia, United States, on Tangier Island in Chesapeake Bay. The population was 727 at the 2010 census. Since 1850, the island's landmass has been reduced by 67%. Under the mid-range sea level rise scena ...

. Both islands are situated in the lower

Chesapeake Bay The Chesapeake Bay ( ) is the largest estuary in the United States. The Bay is located in the Mid-Atlantic (United States), Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula (including the parts: the ...

. The refuge was established in 1954 when the late Glenn L. Martin donated to the

U.S. Fish and Wildlife Service The United States Fish and Wildlife Service (USFWS or FWS) is an agency within the United States Department of the Interior dedicated to the management of fish, wildlife, and natural habitats. The mission of the agency is "working with oth ...

. Since then, donation and purchase has increased the size of the refuge to . The

tidal marsh A tidal marsh (also known as a type of "tidal wetland") is a marsh found along rivers, coasts and estuaries which floods and drains by the tidal movement of the adjacent estuary, sea or ocean. Tidal marshes are commonly zoned into lower marshes ( ...

cove A cove is a small type of bay or coastal inlet. Coves usually have narrow, restricted entrances, are often circular or oval, and are often situated within a larger bay. Small, narrow, sheltered bays, inlets, creeks, or recesses in a coast are o ...

s and creeks, and vegetated ridges of the refuge form an important stopover and wintering area for thousands of migratory

waterfowl Anseriformes is an order of birds also known as waterfowl that comprises about 180 living species of birds in three families: Anhimidae (three species of screamers), Anseranatidae (the magpie goose), and Anatidae, the largest family, which in ...

and nesting habitat for various wildlife species. Martin National Wildlife Refuge is the largest unit of the Chesapeake Islands Refuges, which also includes

Spring Island Spring Island is a nature preserve and island residential community in Beaufort County, South Carolina. It is a 3000-acre coastal Sea Island consists of live oak forest interwoven with waterfront homes. Amenities * Two clubhouses * Two onsite r ...

, Barren Island, and Bishops Head in

Dorchester County, Maryland Dorchester County is a county located in the U.S. state of Maryland. At the 2020 census, the population was 32,531. Its county seat is Cambridge. The county was formed in 1669 and named for the Earl of Dorset, a family friend of the Calverts (t ...

. The management of the Chesapeake Islands Refuges falls under the umbrella of the

Chesapeake Marshlands National Wildlife Refuge Complex Chesapeake Marshlands National Wildlife Refuge Complex is a National Wildlife Refuge complex in the state of Maryland located near the Delmarva Peninsula. Refuges within the complex * Blackwater National Wildlife Refuge * Eastern Neck National Wi ...

. Located in

Cambridge, Maryland Cambridge is a city in Dorchester County, Maryland, United States. The population was 13,096 at the 2020 census. It is the county seat of Dorchester County and the county's largest municipality. Cambridge is the fourth most populous city in Maryl ...

, the complex also manages

Blackwater National Wildlife Refuge The Blackwater National Wildlife Refuge was established in 1933 as a waterfowl sanctuary for birds migrating along the critical migration highway called the Atlantic Flyway. The refuge is located on Maryland's Eastern Shore, just south of C ...

and

Susquehanna River National Wildlife Refuge Susquehanna River National Wildlife Refuge is located on a small island in size located at the mouth of the Susquehanna River in Harford County, Maryland. It is a satellite refuge managed by Blackwater National Wildlife Refuge. In the 1920s, the ...

Wildlife

The tidal marsh,

s, creeks and ridges of the refuge provide an important rest area and winter home for thousands of migratory waterfowl and nesting habitat for a variety of wildlife that change with the seasons. Winter residents on the refuge include black ducks, pintail, mergansers,

long-tailed duck The long-tailed duck (''Clangula hyemalis''), formerly known as oldsquaw, is a medium-sized sea duck that breeds in the tundra and taiga regions of the arctic and winters along the northern coastlines of the Atlantic and Pacific Oceans. It is th ...

s, scoters,

bufflehead The bufflehead (''Bucephala albeola'') is a small sea duck of the genus ''Bucephala'', the goldeneyes. This species was first described by Carl Linnaeus in his landmark 1758 10th edition of ''Systema Naturae'' as ''Anas albeola''. The genus na ...

Canada geese The Canada goose (''Branta canadensis''), or Canadian goose, is a large wild goose with a black head and neck, white cheeks, white under its chin, and a brown body. It is native to the arctic and temperate regions of North America, and it is o ...

, and

tundra swan The tundra swan (''Cygnus columbianus'') is a small swan of the Holarctic. The two taxa within it are usually regarded as conspecific, but are also sometimes split into two species: Bewick's swan (''Cygnus bewickii'') of the Palaearctic and the w ...

s. During spring and summer, the

salt marsh A salt marsh or saltmarsh, also known as a coastal salt marsh or a tidal marsh, is a coastal ecosystem in the upper coastal intertidal zone between land and open saltwater or brackish water that is regularly flooded by the tides. It is dominated ...

grasses, abundant insects, and underwater vegetation attract black ducks,

mallard The mallard () or wild duck (''Anas platyrhynchos'') is a dabbling duck that breeds throughout the temperate and subtropical Americas, Eurasia, and North Africa, and has been introduced to New Zealand, Australia, Peru, Brazil, Uruguay, Arge ...

gadwall The gadwall (''Mareca strepera'') is a common and widespread dabbling duck in the family Anatidae. Taxonomy The gadwall was first described by Carl Linnaeus in his landmark 1758 10th edition of ''Systema Naturae''. DNA studies have shown that ...

, and

green-winged teal The green-winged teal (''Anas carolinensis'') is a common and widespread duck that breeds in the northern areas of North America except on the Aleutian Islands. It was considered Conspecificity, conspecific with the Eurasian teal (''A. crecca'') ...

to nest on the refuge. Gulls, terns, black skimmers, oystercatchers, and

willet The willet (''Tringa semipalmata'') is a large shorebird in the family Scolopacidae. It is a relatively large and robust sandpiper, and is the largest of the species called "shanks" in the genus ''Tringa''. Its closest relative is the lesser yel ...

s nest and feed along the marsh grasses,

mudflat Mudflats or mud flats, also known as tidal flats or, in Ireland, slob or slobs, are coastal wetlands that form in intertidal areas where sediments have been deposited by tides or rivers. A global analysis published in 2019 suggested that tidal fl ...

s, and sand bars. The wooded ridges provide nest sites for several water birds. Ten different species, including herons, egrets, and

glossy ibis The glossy ibis (''Plegadis falcinellus'') is a water bird in the order Pelecaniformes and the ibis and spoonbill family Threskiornithidae. The scientific name derives from Ancient Greek ''plegados'' and Latin, ''falcis'', both meaning "sickle" a ...

have been seen in rookeries on the refuge. Rookeries are groups or colonies of birds that nest together. Martin NWR supports the largest colony of

brown pelican The brown pelican (''Pelecanus occidentalis'') is a bird of the pelican family, Pelecanidae, one of three species found in the Americas and one of two that feed by diving into water. It is found on the Atlantic Coast from New Jersey to the mout ...

s in the Maryland portion of the Chesapeake Bay. A small population of

red fox The red fox (''Vulpes vulpes'') is the largest of the true foxes and one of the most widely distributed members of the Order (biology), order Carnivora, being present across the entire Northern Hemisphere including most of North America, Europe ...

muskrat The muskrat (''Ondatra zibethicus'') is a medium-sized semiaquatic rodent native to North America and an introduced species in parts of Europe, Asia, and South America. The muskrat is found in wetlands over a wide range of climates and habitat ...

mink Mink are dark-colored, semiaquatic, carnivorous mammals of the genera ''Neogale'' and '' Mustela'' and part of the family Mustelidae, which also includes weasels, otters, and ferrets. There are two extant species referred to as "mink": the A ...

, otter, voles, northern diamondback terrapin, and various nonvenomous water snakes also live in the marsh areas.

Clapper rail The clapper rail (''Rallus crepitans'') is a member of the rail family, Rallidae. The taxonomy for this species is confusing and still being determined. It is a large brown rail that is resident in wetlands along the Atlantic coasts of the easte ...

seaside sparrow The seaside sparrow (''Ammospiza maritima'') is an American sparrow. Description Adults have brownish upperparts with gray on the crown and nape, and a grayish-buff-colored breast with dark streaks; they have a dark face with gray cheeks, a white ...

s, and

marsh wren The marsh wren (''Cistothorus palustris'') is a small North American songbird of the wren family. It is sometimes called the long-billed marsh wren to distinguish it from the sedge wren, also known as the short-billed marsh wren. Taxonomy The ma ...

s also depend on the protected refuge habitat.

Peregrine falcon The peregrine falcon (''Falco peregrinus''), also known as the peregrine, and historically as the duck hawk in North America, is a Cosmopolitan distribution, cosmopolitan bird of prey (Bird of prey, raptor) in the family (biology), family Falco ...

s have been nesting on the refuge every year since the first peregrine nesting tower was installed in 1984. The marsh and estuary are important in the production of marine species such as crabs and oysters that help form the food chain.

References

External links

Glenn Martin National Wildlife Refuge
{{authority control Protected areas of Accomack County, Virginia Smith Island, Maryland National Wildlife Refuges in Maryland National Wildlife Refuges in Virginia Protected areas of Somerset County, Maryland Protected areas established in 1954 1954 establishments in Maryland 1954 establishments in Virginia Wetlands of Maryland Wetlands of Virginia Landforms of Accomack County, Virginia Landforms of Somerset County, Maryland