Warning: The NCBI web site requires JavaScript to function. more...
An official website of the United States government
The .gov means it's official. Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you're on a federal government site.
The site is secure. The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.
Coscoroba
genus, birds
Nucleotide Protein
Lophonetta
Callonetta
Somateria
Spatula
Bucephala
Netta
Aythya
Alopochen
Tadorna
Mergus
Dendrocygna
Cygnus
(swans), genus, birds
Chenonetta
Chloephaga
Cereopsis
Cairina
Branta
Anser
(geese), genus, birds
Anas
(ducks), genus, birds
Filters: Manage Filters
Your browsing activity is empty.
Activity recording is turned off.
Turn recording back on