ケワタガモ属 (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "ケワタガモ属" in Japanese language version.

refsWebsite

Global rank Japanese rank

low place

6,471^st place

low place

2,179^th place

2,819^th place

birdlife.org

Jobling, James A.: “The Key to Scientific Names: SOMATERIA” (英語). Cornell University. 21 May 2021閲覧。

del Hoyo, Josep; Elliott, Andrew; Sargatal, Jordi, ed (1992) (英語). Handbook of the Birds of the World I: Ostrich to Ducks. Lynx Edicions. pp. 620–621. ISBN 8487334105
Kear, Janet, ed (2005) (英語). Ducks, Geese and Swans. II. Oxford University Press. pp. 693–705. ISBN 0198610092
del Hoyo, J. & Collar, N. J. (2014) (英語). HBW and BirdLife International Illustrated Checklist of the Birds of the World I: Non-passerines. Lynx Edicions. pp. 130–131. ISBN 978-8496553941