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For species found in the 50 states, Puerto Rico, and the U.S. Virgin Islands, the taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (common and scientific names) used in the list are those of the AOS, the recognized scientific authority on the taxonomy and nomenclature of North and Middle American birds.
This is a list of the bird and mammal species and subspecies described as endangered by the United States Fish and Wildlife Service. It contains species and subspecies not only in the U.S. and its territories, but also those only found in other parts of the world. It does not include endangered fish, amphibians, reptiles, plants, or invertebrates.
According to the International Union for Conservation of Nature (IUCN), 77 bird species in the United States are threatened with extinction. [1] The IUCN has classified each of these species into one of three conservation statuses: vulnerable VU, endangered EN, and critically endangered CR (v. 2013.2, the data is current as of March 5, 2014 [1]).
United States 1960 postal stamp advocating water conservation. Water conservation aims to sustainably manage the natural resource of fresh water, protect the hydrosphere, and meet current and future human demand. Water conservation makes it possible to avoid water scarcity. It covers all the policies, strategies and activities to reach these aims.
The mission of the refuge system is "To administer a national network of lands and waters for the conservation, management, and where appropriate, restoration of fish, wildlife, and plant resources and their habitats within the United States for the benefit of the present and future generations of Americans" (National Wildlife Refuge System Improvement Act of 1997).
As of 2022, there are 588 National Wildlife Refuges in the United States, [1] with the addition of the Green River National Wildlife Refuge. [2] Refuges that have boundaries in multiple states are listed only in the state where the main visitor entrance is located. The newest refuge replaces the Cherry Valley National Wildlife Refuge in ...
"Conservation" originated in the late 19th century as a movement built around the conservation of natural resources and an attempt to stave off air, water, and land pollution. By the 1970s environmentalism evolved into a much more sophisticated control regime, one that employed the Environmental Protection Agency to slow environmental degradation.
Sora nesting sites occurred in shallower water than random sites in western New York. [24] Average water depths reported at nest sites range from 4 in (10 cm) for 4 sora nests in Colorado to nearly 10 in (25 cm) for sora nests in western New York. [24] In areas of deep water, soras typically wade on mats of floating vegetation. [15]
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