List of birds of South Dakota
Wikimedia list article

This list of birds of South Dakota includes species documented in the U.S. state of South Dakota and accepted by the South Dakota Ornithologists' Union (SDOU). As of October 2021, 440 species were included in the official list. with some additions from Avibase. Of them, 67 are classed as accidental, 21 are classed as casual, four are hypothetical (see below), and eight have been introduced to North America.
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.
Unless otherwise noted, all species listed below are considered to occur regularly in South Dakota as permanent residents, summer or winter visitors, or migrants. These tags are used to annotate some species:
(A) Accidental - "occurred in 0-2 of the last 10 years" per the SDOU
(C) Casual - "occurred in 4-6 of the last 10 years" per the SDOU
(I) Introduced - Species established in North America as a result of human action
Ducks, geese, and waterfowl
Order: Anseriformes Family: 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. Forty-one species have been recorded in South Dakota.
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