Search results
Results from the WOW.Com Content Network
The avian family Anatidae, commonly called waterfowl, comprise the ducks, geese, and swans. The International Ornithological Committee (IOC) recognizes these 174 Anatidae species distributed among 53 genera, 32 of which have only one species.
The trumpeter swan is the largest extant species of waterfowl, and both the heaviest and longest native bird of North America. Adults usually measure 138–165 cm (4 ft 6 in – 5 ft 5 in) long, though large males can exceed 180 cm (5 ft 11 in) in total length. [3] [14] [15] [16] The weight of adult birds is typically 7–13.6 kg (15–30 lb ...
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.
Of the nearly 2,000 species of birds that live in North America, 450 have been documented visiting the state. ... "By the end of August, the waterfowl and shore birds are getting ready to go back ...
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]).
Wisconsin's 2024 data are similar to recent results in the continental waterfowl survey. In the traditional North American survey area the total duck population estimate was 32.3 million birds, a ...
Aug. 18—MEMPHIS, Tenn. — Continental breeding duck populations are down 7% from 2022, Ducks Unlimited said Friday, Aug. 18, in reporting results from the annual spring North American waterfowl ...
Subfamily: Aythyinae, diving ducks (Some 15 species of diving ducks, of worldwide distribution, in two to four genera; The 1986 morphological analysis [10] suggested the probably extinct pink-headed duck of India, previously treated separately in Rhodonessa, should be placed in Netta, but this has been questioned. [15]