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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 ...
Cormorants’ effect on the aquaculture industry is significant, with a dense flock capable of consuming a harvest. Cormorants are estimated to cost the catfish industry in Mississippi alone between $10 million and $25 million annually. [3] The double-crested cormorant is the only species appreciably found inland in the United States. [3]
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.
In March, a mother was horrified to find a pedophile symbol on a toy she bought for her daughter. Although the symbol was not intentionally placed on the toy by the company who manufactured the ...
I'm not going to lie: I never had a Philly cheesesteak until last week. Even though one of my best friends lives in The City of Brotherly Love and I've visited more times than I can count, they ...