This list of birds of Kansas includes species documented in the U.S. state of Kansas and accepted by the Kansas Ornithological Society (KOS). As of January 2022, there are 483 species included in the official list. Of them, 75 are classed as accidental, 11 are classed as hypothetical, and five have been introduced to North America. In addition to the 483, two species are extinct and one has been extirpated and are longer included in the official list. Another is not on the official list because it was not identified at the species level. All four are included here. Only birds that are considered to have established, self-sustaining, wild populations in Kansas are included on this list. This means that birds that are considered probable escapees, although they may have been sighted flying free in Kansas, are not included. This list is presented in the taxonomic sequence of the Check-list of North and Middle American Birds, 7th edition through the 62nd Supplement, published by the American Ornithological Society (AOS). Common and scientific names are also those of the Check-list, except that the common names of families are from the Clements taxonomy because the AOS list does not include them. These tags are used to annotate some species: (A) Accidental – "Fewer than ten Kansas records" per the KOS (E) Extinct – a recent species that no longer exists (Ex) Extirpated – a species that is no longer in Kansas, but exists elsewhere (I) Introduced – a species established in North America as a result of human action (H) Hypothetical – a species that has had a credible sighting reported, but has not been documented with a specimen or suitable photograph (F) Fictional – birds known to be fictional but associated with Kansas tradition Ducks, geese, and waterfowl Order: AnseriformesFamily: Anatidae The family Anatidae includes the ducks and most duck-like waterfowl, such as geese and swans. These birds are adapted to an aquatic existence with webbed feet, bills which are flattened to a greater or lesser extent, and feathers that are excellent at shedding water due to special oils. Black-bellied whistling-duck, Dendrocygna autumnalis Fulvous whistling-duck, Dendrocygna bicolor Snow goose, Anser caerulescens Ross's goose, Anser rossii Greater white-fronted goose, Anser albifrons Taiga bean-goose/tundra bean-goose, Anser fabalis/ Anser serrirostris (A) Brant, Branta bernicla Cackling goose, Branta hutchinsonii Canada goose, Branta canadensis Trumpeter swan, Cygnus buccinator Tundra swan, Cygnus columbianus Wood duck, Aix sponsa