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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 ...
At its 2013 peak, this was the largest double-crested cormorant colony in North America, with some 30,000 birds, more than 40% of the species’ population in the western U.S., according to the Corps.
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 ...
Original – Double-crested cormorant juvenile drying its wet feathers Reason Quality lead image, represents the subject well. We do have a 2005 FP here but it doesn't have a good angle or high resolution. I will do a delist nom once this nom passes. Articles in which this image appears Double-crested cormorant FP category for this image
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]
The three primary factors influencing quality panfish populations are predators, prey, and the environment. [17] In eastern North America, yellow perch are an extremely important food source for birds such as double-crested cormorants. The cormorants specifically target yellow perch as primary prey.
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. One species has been recorded in Wyoming. Double-crested cormorant, Nannopterum auritum; Neotropic cormorant, Nannopterum brasilianum (A)
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. Double-crested cormorant, Nannopterum auritum; Neotropic cormorant, Nannopterum brasilianum