Their feet are used to propel them along. The parents both incubate the eggs, which will hatch one after the other within 25 to 28 days. Breeding takes place from April to August, peaking from May through July. It nests in scattered colonies with herons and egrets on the Atlantic and Pacific coasts and in the interior of the continent. They frequently collect junk, like rope, fishnet, deflated balloons, and plastic debris, and incorporate this into their nest. Nicholson, C. P. 1997. Sometimes they are killed or injured when caught by fishhooks, trawls, gill-nets, and lobster traps. The Sibley Guide to Birds. It is white for cormorants from Alaska, but black for those in other regions. They are very gregarious and can be found in large and small groups at the breeding grounds, and in winter, often feeding in large flocks. Univ. 1999. These birds defend a small space immediately around their nest which is smaller than one meter across. Breeding takes place from Double-crested cormorants are monogamous. Fish and Wildlife Service published an Environmental Impact Statement on managing Double-crested Cormorant populations in 2003. Rangewide Double-crested Cormorant numbers have recovered to such an extent that they are currently being blamed for declines in sport fisheries, devastating fish farms, and denuding nesting sites. This black or grayish-black bird is about three feet long with a wingspan of 4.5 feet and has a hooked bill and powerful webbed feet that are used for swimming underwater. These goose-sized, turquoise-eyed beauties are something to behold. The double-crested cormorant (Phalacrocorax auritus) is a member of the cormorant family of seabirds. The colonies they breed in can number as many as three thousand pairs. They can fly from about 6 weeks and are able to dive when 6 to 7 weeks old. Chicks are completely independent at 10 weeks old and breed once they are 2 years old. Overall, currently Double-crested cormorants are classified as Least Concern (LC) on the IUCN Red List and their numbers today are increasing. The parents both incubate the eggs, which will hatch one after the other within 25 to 28 days. It has a bare patch of orange-yellow facial skin. The Double-crested (which rarely looks noticeably crested in the field) is the most generally distributed cormorant in North America, and the only one likely to be seen inland in most areas. According to the All About Birds resource, the continental population is more than 740,000 breeding birds. Only one brood is raised per year. Large pebbles are sometimes found in cormorant nests, the cormorants treating them as eggs. Looking like a mix of a loon and a goose, it is a relative of the frigate bird and the booby and is commonly seen near fresh and salt water throughout North America, perhaps most visible when standing on docks, rocky islands, or channel markers, drying its outspread wings. In breeding plumage, adults have two tufts of feathers behind their eyes, hence the name 'double-crested.' They nest on islands on some of the larger lakes in Tennessee. Double-crested cormorants are diurnal birds. Double-crested cormorants occur widely across North America, breeding locally along all coasts as well as extensively in Florida, in the center of the continent, and along the St. Lawrence Seaway, the Great Lakes and in Mexico, the Bahamas, Belize and Cuba. Food. A pair works together to repair an old nest or to build a new one on the ground or sometimes in a tree. 2000. Description: This large, dark waterbird has a long body, and a long neck. A. Cormorants usually winter along the coast of the Pacific Ocean from Alaska to Mexico, and along the Atlantic and the Gulf coasts from Belize to North Carolina, as well as inland in ice-free areas along lakes and large rivers. The Double-crested cormorant’s crest is visible only on adults during the breeding season. The Double-crested Cormorant is the most numerous and widespread cormorant in North America and the only one found in large numbers inland. Double-crested Cormorant. They begin to leave their nest at 3 to 4 weeks of age. They need water for feeding and perches nearby, such as rocks, sandbars, trees, pilings, shipwrecks, wires, or docks where they can rest and dry out during the day. These birds are skilled in diving for small fish. They fly low over water, their bill tilted upward slightly, sometimes flying out from the colony in a long, single-file line. They inhabit a range of marine and aquatic inland habitats. Neotropic Cormorants, very rare in West Tennessee, are smaller and thinner, the tail longer, and the bare skin around the face smaller. Double-crested Cormorant (Phalacrocorax auritus). Incubation: Both adults incubate the eggs for 25 to 29 days. This species feeds during the day, diving for fish for 30–70 seconds, as deep as 1.5–7.5 m (4 ft 11 in–24 ft 7 in). Males choose a nest site, then advertise for a female, standing to perform a “wing-waving display” to show off the brightly-colored skin on the head and neck. Smaller numbers winter inland along large rivers and lakes near the Mississippi. The winter range includes the Pacific Coast from Alaska to Mexico, and the Atlantic and Gulf coasts from North Carolina to Belize. Being legendary birds since prehistoric times, they have evolved into seabirds that prefer freshwater fish. Sibley, D. A. In the breeding season, a Double-crested cormorant’s throat turns bright orange. Double-crested cormorants are carnivores (piscivores), they primarily eat fish, but also insects, crustaceans and amphibians. In flight, they have a pronounced kink in their long necks. Rangewide Double-crested Cormorant numbers have recovered to such an extent that they are currently being blamed for declines in sport fisheries, devastating fish farms, and denuding nesting sites. The Double-crested cormorant is a gangly, solid prehistoric-looking, heavy boned fishing bird of matte-black with yellow-orange skin on its face. Adults have black plumage, an orange-yellow patch of skin at the base of their slender, hook-tipped bill, and eyes that are brilliant turquoise. Hatch, J. J., and D. V. Weseloh. Clutch Size: Usually 4 eggs with a range of 2 to 7 eggs. They can fly from about 6 weeks and are able to dive when 6 to 7 weeks old. Captive birds will perch with wings open as if to dry them, even if they have not gotten wet. While never abundant, this bird disappeared as a nesting species in Tennessee between 1955 and 1992, most likely due to eggshell thinning caused by DDT. Nest: The large bulky nest is made of sticks and often includes bits of junk like rope, fishnet, and plastic. Double-crested Cormorant characteristically rest in trees or on the shore with wings outstretched. Atlas of Breeding Birds of Tennessee. Also, they are very susceptible to disturbance while nesting. Adults will shade them with their bodies and will bring them water, pouring it from their mouths into those of the chicks. Egg laying can begin as early as April and extends into May. It is one of six species of cormorants in North America and one of 38 species worldwide. Double-Crested Cormorant Wikipedia article -, 2. Dynamic map of Double-crested Cormorant eBird observations in Tennessee, Obsolete English Names: water turkey, cormorant, snake bird, shag, Best places to see in Tennessee:  Mississippi River Valley, including the river proper, but also lakes and rivers adjacent to the river, also Drakes Creek on Old Hickory Lake. They are an uncommon breeding bird in the state, but numbers are increasing rapidly. These birds are susceptible to pesticide poisoning and other contaminants, as well as to oil spills. 1 to 7 pale bluish white chalky eggs are laid (usually 4). Habitat: Found on open water, reservoirs, larger lakes, and wide stretches of rivers across Tennessee. It is lined with grass or similar material and placed in a tree or, less frequently, on the ground. Cool Facts from the Cornell lab From a distance, Double-crested Cormorants are dark birds with snaky necks, but up-close they’re quite colorful—with orange-yellow skin on their face and throat, striking aquamarine eyes that sparkle like jewels, and a mouth that is bright blue on the inside. Fish and Wildlife Service … Univ. Tennessee Press, Knoxville. In the breeding season, a Double-crested cormorant’s throat turns bright orange. 1. They begin to leave their nest at 3 to 4 weeks of age. Males choose a nest site, then advertise for a female, standing to perform a “wing-waving display” to show off the brightly-colored skin on the head and neck. Adults will shade the chicks and bring water to them, pouring it into the chicks’ mouths from their own. This means that males mate with only one female and females mate with only one male. 441 (A. Poole and F. Gill, eds.). Double-crested cormorants are monogamous. Tennessee Press, Knoxville. A male will also engage in elaborate courtship dances, including a dance in the water where he presents a female with nest material. Fun Facts for Kids The Double-crested cormorant’s crest is visible only on adults during the breeding season. These birds make a bulky Dest out of sticks and other matter. Among them is the double-crested cormorant, named for two small tufts (or crests) of feathers on either side of the adult cormorant’s head, usually seen most vividly during mating season. This means that males mate with only one female and females mate with only one male. Description: This large, dark waterbird has a long body, and a long neck. A cormorant’s diet is almost all fish, with just a few insects, crustaceans, or amphibians. Facts About Cormorant Cormorants are medium-to-large, fairly long-necked seabirds, similar to the pelican and gannet. Adults leave their nest unguarded when disturbed, leaving chicks and eggs open to being eaten by gulls and further predators, and in danger of overheating in the sun. A male will also engage in elaborate courtship dances, including a dance in the water where he presents a female with nest material. These birds make a bulky Dest out of sticks and other matter. Fledging: The young first fly at 5 to 6 weeks and are independent in about 10 weeks. These birds defend a small space immediately around their nest which is smaller than one meter across. First-year birds are pale on the upper breast and darker on the belly. A. Knopf, New York, NY. According to the What Bird resource, the total population size of the Double-crested cormorant is 1,100,000 to 2,200,000 individuals. It currently breeds in colonies with other herons in scattered locations across the state. Its habitat is near rivers and lakes as well as in coastal areas, and is widely distributed across North America, from the Aleutian Islands in Alaska down to Florida and Mexico. Due to significant population increase and range expansion, the U.S. Status in Tennessee: Double-crested Cormorants are an uncommon migrant and winter resident in East Tennessee, and a fairly common migrant and winter resident in Middle and West Tennessee. Adults have black plumage, an orange-yellow patch of skin at the base of their slender, hook-tipped bill, and eyes that are brilliant … Diet: Primarily fish, but also crawfish and other aquatic vertebrates and invertebrates. Chicks are completely independent at 10 weeks old and breed once they are 2 years old.. A pair works together to repair an old nest or to build a new one on the ground or sometimes in a tree. They breed in colonies and migrate in large groups. 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