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In the U.S. state of Colorado 519 species of birds have been documented as of September 2022 according to the Colorado Bird Records Committee (CBRC) of Colorado Field Ornithologists. [ 1 ] This list is presented in the taxonomic sequence of the Check-list of North and Middle American Birds , 7th edition through the 63rd Supplement, published by ...
The average global population of all mature birds is estimated to be on the order of 100 billion individuals. [1] [2] [3] The total population including younglings is somewhat higher during the breeding season of each species. [3] This list is incomplete, because experts have not estimated all bird numbers.
A white-tailed ptarmigan, common above timberline. This is a comprehensive listing of the bird species recorded in Rocky Mountain National Park, a 265,461 acres (107,428 ha) park in the U.S. state of Colorado.
3.3 Law and order in Colorado. ... Population of Colorado: 5,029,196 (2010 U.S. Census [7]) ... Birds of Colorado; Mammals of Colorado; Reptiles
This is a list of fauna of the Lower Colorado River Valley in the southwestern United States. Birds. Abert's towhee [1] Ash-throated flycatcher [1] Bell's vireo [2]
Ranges are based on the IOC World Bird List for that species unless otherwise noted. Population estimates are of the number of mature individuals and are taken from the IUCN Red List. This list follows the taxonomic treatment (designation and order of species) and nomenclature (scientific and common names) of version 13.2 of the IOC World Bird ...
The northern cardinal is the state bird of seven states, followed by the western meadowlark as the state bird of six states. The District of Columbia designated a district bird in 1938. [4] Of the five inhabited territories of the United States, American Samoa and Puerto Rico are the only ones without territorial birds.
The Gunnison grouse, Gunnison sage-grouse or lesser sage-grouse (Centrocercus minimus) is a species of grouse endemic to the United States.It is similar to the closely related greater sage-grouse (Centrocercus urophasianus) in appearance, but about a third smaller in size, with much thicker plumes behind the head; it also has a less elaborate courtship dance.