Adding us as a Preferred Source tells Google you trust our content, so our articles show up more often in your Google Search, Discover feed, and AI Overviews.
verifiedCite
While every effort has been made to follow citation style rules, there may be some discrepancies.
Please refer to the appropriate style manual or other sources if you have any questions.
Select Citation Style
barnacle goose
Barnacle goose (Branta leucopsis).
Barnacle goose
bird
Also known as: Branta leucopsis
Barnacle goose, (Branta leucopsis), water bird of the family Anatidae (order Anseriformes) that resembles a small Canada goose, with dark back, white face, and black neck and bib. It winters in the northern British Isles and on the coasts of Denmark, Germany, and the Netherlands. During the European Middle Ages, people thought it hatched from barnacles; thus, the birds were considered “fish” and could be eaten on Fridays. The brent goose, or brant, was called barnacle, or bernicle, in Ireland for the same reason.
This article was most recently revised and updated by Melissa Albert.
Discover how ordinary objects work, and expand your understanding of the familiar.
" height="20" alt="HEW Logo">
By clicking "Sign Up", you consent to the Britannica Privacy Policy and Terms of Use.