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The passenger pigeon was a flocking species that was once a species widespread in North America. Before the arrival of colonial Europeans to North America, the passenger pigeon was thought to account for up to 40% of all individual birds on the continent. [24] The main drivers of the species' extinction were habitat destruction and overhunting.
The passenger pigeon was found across most of North America east of the Rocky Mountains, from the Great Plains to the Atlantic coast in the east, to the south of Canada in the north, and the north of Mississippi in the southern United States, coinciding with its primary habitat, the eastern deciduous forests. Within this range, it constantly ...
Birds are also threatened by high rise buildings, communications towers, and other human-related activities and structures; estimates vary from about 3.5 to 975 million birds a year in the North America alone. [18] The largest source of human-related bird death is due to glass windows, which kill 100–900 million birds a year.
Playwright Anna Ouyang Moench's 'Birds of North America' has its Los Angeles premiere at the Odyssey Theatre in a production starring Arye Gross and Jacqueline Misaye.
In North America, the extermination of the highly gregarious passenger pigeon has been well documented. The birds were hunted as if inexhaustible. Case in point: in 1871, in Wisconsin, an estimated 136 million pigeons nested in a dense congregation over a wide area; thousands of people were drawn to hunt the birds, shipping the squab to market ...
North America’s grassland birds are deeply in trouble 50 years after adoption of the Endangered Species Act, with numbers plunging as habitat loss, land degradation and climate change threaten ...
The Virginia opossum, Didelphis virginiana, the only marsupial in temperate North America. Armadillos, opossums and porcupines are present in North America today because of the Great American Interchange. Opossums and porcupines were among the most successful northward migrants, reaching as far as Canada and Alaska, respectively.
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]).