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The double-crested cormorant (Nannopterum auritum) is a member of the cormorant family of water birds. It is found near rivers and lakes and in coastal areas and is widely distributed across North America, from the Aleutian Islands in Alaska down to Florida and Mexico. Measuring 70–90 cm (28–35 in) in length, it is entirely black except for ...
Cormorants are medium-to-large aquatic birds, usually with mainly dark plumage and areas of colored skin on the face. The bill is long, thin, and sharply hooked. Their feet are four-toed and webbed. Three species have been recorded in Virginia. Great cormorant, Phalacrocorax carbo; Double-crested cormorant, Nannopterum auritum
This name was coined for the flightless cormorant, which does indeed have small wings. Genetic studies have found that the neotropic and double-crested cormorants form a clade with the flightless cormorant, and they are thus placed together in the genus Nannopterum despite both species having normal-sized wings and full flight capabilities. [4]
Double-crested cormorant. Birds portal; Animals portal; Cormorant culling is the intentional killing of cormorants by humans for the purposes of wildlife management. It has been practiced for centuries, with supporters of culling generally arising from the angling community. Culling techniques may involve the killing of birds, the destruction ...
Yellow perch have been proven to grow the best in lakes where they are piscivorous due to the lack of predators. Perch do not perform well in cold, deep, oligotrophic lakes. Seasonal movements tend to follow the 20 °C isotherm and water temperature is the most important factor influencing fish distribution.
Japanese cormorant: Phalacrocorax capillatus: 20 White-breasted cormorant: Phalacrocorax lucidus: 21 Great cormorant: Phalacrocorax carbo: 22 European shag: Gulosus aristotelis: 23 Flightless cormorant: Nannopterum harrisi: 24 Neotropic cormorant: Nannopterum brasilianum: 25 Double-crested cormorant: Nannopterum auritum: 26 Rock shag ...
This bird is often mistaken for the double-crested cormorant due to its similar size and shape, although the two species can be differentiated by their tails and bills. The tail of the anhinga is wider and much longer than the cormorant's. The bill of the anhinga is pointed, while the bill of the cormorant has a hook-tip. [20]
Virginia rail, Rallus limicola; ... Anhingas are cormorant-like water birds with very long necks and long, straight beaks. ... Double-crested cormorant, ...