After fishing, cormorants retire to high, airy perches to dry off and digest their meals – rocks, wires, tops of dead trees, ship masts. They nest on islands on some of the larger lakes in Tennessee. Frequency: The Double-crested Cormorant is common throughout the year within the Presidio. Or take action immediately with one of our current campaigns below: The Audubon Bird Guide is a free and complete field guide to more than 800 species of North American birds, right in your pocket. Learn more about these drawings. The double-crested cormorant gets its name because it has two white streaks on its head during the breeding season. First-year birds are pale on the upper breast and darker on the belly. Double-crested Cormorants constantly flap their wings and have a bulky appearance when flying. The double-crested cormorant is a medium to large seabird, with a body length of approximately 30 inches and a wingspan of 45 inches. About the Southeast Region. Anhinga. A cormorant colony. 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. These solid, heavy-boned birds are experts at diving to catch small fish. Clutch size ranges from 1-7 eggs and the incubation Adults shade the chicks and also bring them water, pouring it from their mouths into those of the chicks. The State of North America’s Birds 2016. A. Cormorants and Shags(Order: Suliformes, Family:Phalacrocoracidae). However, they will sometimes also eat amphibians and crustaceans. In flight, they have a pronounced kink in their long necks. They form colonies of stick nests built high in trees on islands or in patches of flooded timber. Nest: Site is near water on cliff ledge, on ground on island, or at any height in tree. The male chooses the nest site and then attracts a female. ACKNOWLEDGMENTS: The information contained in this document was gathered from various, publicly available sources, including Audubon and the Cornell Lab of Ornithology. menu. Tell Congress to stop efforts to strip away critical protections in the Migratory Bird Treaty Act. Double-crested Cormorant chicks are often exposed to direct sun. both parents feed the nestlings. Nicholson, C. P. 1997. Breeding birds have small tufts on the side of the head, but can be difficult to see. In addition to fishing waters, cormorants need perching areas for the considerable amount of time they spend resting each day. On the water they sit low, with the head and bill usually tilted slightly upward. Alfred A. Knopf, New York. The NFL team's racist name is finally gone. • Pete Dunne’s Essential Field Guide Companion. The winner of the 2020 Audubon Photography Award explains how to expand your wildlife photography this summer. Usually first fly at about 5-6 weeks, probably independent at 9-10 weeks. Habitat: Found on open water, reservoirs, larger lakes, and wide stretches of rivers across Tennessee. BIBLIOGRAPHY: For further details about cormorants you may want to consult the following literature: • The Birds of North America, No. After fishing, they stand on docks, rocks, and tree limbs with wings spread open to dry. Choose a temperature scenario below to see which threats will affect this species as warming increases. Brown booby. Individuals rest and preen in large groups on rocky or sandy islands. These solid, heavy-boned birds are experts at diving to catch small fish. After a while, masses of cormorant guano may kill these trees and the trees may topple, at which point the cormorants may switch to nesting on the ground. Breeding cormorants readily steal nesting materials from a nearby nest that is not guarded. 3-4, sometimes 1-7. Double-crested cormorants are dark, ducklike water birds with long necks, hooked bills, legs set far back on the body, and a habit of hanging their wings out to dry in the sun. Text © Kenn Kaufman, adapted from They return to their own nests to be fed. Double-crested Cormorants in Alaska are larger with whiter, straighter crests than individuals in the rest of North America. Forages mostly by diving from surface and swimming underwater, propelled by feet (may sometimes use wings as well). Juvenile cormorants are brown with a white face, neck and chest. Pelagic cormorant. Numbers dropped again through 1960s, probably owing to effects of persistent pesticides. 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. Hatch, J. J., and D. V. Weseloh. They spend their winters anywhere that is ice-free along both the Pacific and Atlantic coasts. Nest (built mostly by female, with materials brought by male) platform of sticks and debris, lined with finer materials. Look near lakes and coastlines for perched black waterbirds, smaller and with shorter legs than a heron, and a distinctive S-shaped crook in their neck. Their numbers have increased since the use of DDT was banned. skip to content. Robinson J. C. 1990. When cormorants happen to catch a crustacean like a crayfish, they exhibit a little flair in eating it, hammering the prey on the water to shake its legs off, then flipping it in the air and catching it headfirst for easy swallowing.
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