Waterfowl of North America: Swans and True Geese, Tribe Anserini

• Main Author: Johnsgard, Paul A.
• Format: Text
• Language: unknown
• Published: DigitalCommons@University of Nebraska - Lincoln 2010
• Subjects: Ornithology; Anser erythropus; Anser fabalis; Barnacle goose; lesser white-fronted goose; Pink-footed Goose; Alaska; Siberia
• Online Access: https://digitalcommons.unl.edu/biosciwaterfowlna/9; https://digitalcommons.unl.edu/context/biosciwaterfowlna/article/1008/viewcontent/Swans_and_true_geese.pdf

The approximately twenty extant species of swans and true geese are, unlike the whistling ducks, primarily of temperate and arctic distribution, especially in the Northern Hemisphere. It is thus not surprising that continental North America may lay claim to at least nine breeding species, or nearly...