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The species with the smallest estimated population is the whooping crane, which is conservatively thought to number 50–249 mature individuals, [5] and the one with the largest is the sandhill crane, which has an estimated population of 450,000–550,000 mature individuals.
The California quail is the official state bird of California. This list of birds of California is a comprehensive listing of all the bird species seen naturally in the U.S. state of California as determined by the California Bird Records Committee (CBRC). [1] Additional accidental and hypothetical species have been added from different sources.
Meanwhile, the wild crane population began a steady increase, such that in 2007 the Canadian Wildlife Service counted 266 birds at Wood Buffalo National Park, with 73 mating pairs that produced 80 chicks, 39 of which completed the fall migration, [56] while a United States Fish and Wildlife Service count in early 2017 estimated that 505 ...
The Florida sandhill crane was listed as EC or easily confused to facilitate an attempted reintroduction of the whooping crane (Grus americana) into Florida. The attempt failed, but the listing remained. The current list of endangered subspecies includes only two birds, A. c. nesiotes and A. c. rowani, with A. c. pratensis no longer listed. [27]
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.
The California condor is one of North America's most endangered birds. A comprehensive listing of all the bird species confirmed in the United States follows. It includes species from all 50 states and the District of Columbia as of July 2022. Species confirmed in other U.S. territories are also included with other "as of" dates.
Cranes are very large birds, often considered the world's tallest flying birds. They range in size from the demoiselle crane, which measures 90 cm (35 in) in length, to the sarus crane, which can be up to 176 cm (69 in), although the heaviest is the red-crowned crane, which can weigh 12 kg (26 lb) prior to migrating.
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.