- The ring-necked duck (
Aythya collaris) is a
diving duck from
North America commonly found in
freshwater ponds and lakes. The
scientific name is derived...
-
Canvasback (
Aythya valisineria)
Common pochard (
Aythya ferina)
Redhead (
Aythya americana) Ring-necked duck (
Aythya collaris)
Female Hardhead (
Aythya australis)...
-
Aythya Canvasback (
Aythya valisineria)
Common pochard (
Aythya ferina)
Redhead (
Aythya americana) Ring-necked duck (
Aythya collaris)
Hardhead (
Aythya australis)...
- iucn}}: old-form url, |date= / |doi=
mismatch (help) IUCN (2020-11-13). "
Aythya collaris:
BirdLife International: The IUCN Red List of
Threatened Species 2021:...
- The
lesser scaup (
Aythya affinis) is a
small North American diving duck that
migrates south as far as
Central America in winter. It is
colloquially known...
- Canvasback,
Aythya valisineria (A) Redhead,
Aythya americana (A)
Common pochard,
Aythya ferina (A) Ring-necked duck,
Aythya collaris Greater scaup,
Aythya marila...
- Canvasback,
Aythya valisineria Redhead,
Aythya americana Ring-necked duck,
Aythya collaris Tufted duck,
Aythya fuligula (A)
Greater scaup,
Aythya marila Lesser...
- New
Zealand scaup Aythya novaeseelandiae (Gmelin, JF, 1789) 138 Ring-necked duck
Aythya collaris (Donovan, 1809) 139
Tufted duck
Aythya fuligula (Linnaeus...
- (porrón europeo),
Aythya ferina vulnerable Ring-necked duck (porrón acollarado),
Aythya collaris (A)
Ferruginous duck (porrón pardo),
Aythya nyroca (A – Canary...
-
Aythya valisineria (B) Redhead,
Aythya americana (B) Ring-necked duck,
Aythya collaris (B)
Tufted duck,
Aythya fuligula (U)
Greater scaup,
Aythya marila...
