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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 northern cardinal is the state bird of six states, followed by the western meadowlark also 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 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 rank abundance curve or Whittaker plot is a chart used by ecologists to display relative species abundance, a component of biodiversity. It can also be used to visualize species richness and species evenness. It overcomes the shortcomings of biodiversity indices that cannot display the relative role different variables played in their ...
The taxonomic treatment [3] (designation and sequence of orders, families and species) and nomenclature (common and scientific names) used in the accompanying bird lists adheres to the conventions of the AOS's (2019) Check-list of North American Birds, the recognized scientific authority on the taxonomy and nomenclature of North America birds.
Range expansions are important because they often signal changing habitats, whether the reason can be explained by natural causes or more often human aided causes. Avian range expansion can produce considerable effects in both the population numbers of the invaded species as well as numbers of hybrid species created.
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]
Last week, Colorado reported four confirmed infections of H5N1 bird flu and was checking on the status of a fifth suspected case. The two new cases were in poultry workers with exposure to ...