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Canvasback x Redhead (Aythya valisineria x americana)
Canvasback x Redhead (Aythya valisineria x americana)
Redhead x Ring-necked Duck (Aythya americana x collaris)
Redhead x Ring-necked Duck (Aythya americana x collaris)
Canvasback x Ring-necked Duck (Aythya valisineria x collaris)
Canvasback x Ring-necked Duck (Aythya valisineria x collaris)
Redhead x Lesser Scaup (Aythya americana x affinis)
Redhead x Lesser Scaup (Aythya americana x affinis)
Information:
Note: Extremely difficult to separate from REDH x GRSC
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📷Â
https://macaulaylibrary.org/asset/207654321
https://macaulaylibrary.org/asset/202528571
Common Pochard x Ferruginous Duck (Aythya ferina x nyroca)
Common Pochard x Ferruginous Duck (Aythya ferina x nyroca)
Common Pochard x Tufted Duck (Aythya ferina x fuligula)
Common Pochard x Tufted Duck (Aythya ferina x fuligula)
Ring-necked x Ferruginous Duck (Aythya collaris x nyroca)
Ring-necked x Ferruginous Duck (Aythya collaris x nyroca)
Information:
Media:
Ring-necked x Tufted Duck (Aythya collaris x fuligula)
Ring-necked x Tufted Duck (Aythya collaris x fuligula)
Males with black backs, pale gray flanks, and a subtle "spur" at the fore-flanks as on RNDU. Limited compact solid-looking "tuft" as is typical on Aythya hybrids involving TUDU. Bill usually with extensive white patterning as on RNDU. Female dark brown with similar intermediate features; "tuft" more subdued than on male, bill with extensive white. Wint pattern probably intermediate between parents.
Similar to Ring-necked Duck x scaup and Tufted Duck x scaup. Black back eliminates scaup influence, bill pattern indicative of RNDU influence. Superficially similar to TUDU.
Media:
Status
Status
Exists in the wild in North America, Iceland, and Europe.
Ring-necked Duck x Greater Scaup (Aythya collaris x marila)
Ring-necked Duck x Greater Scaup (Aythya collaris x marila)
Back slate gray, intermediate between parent species. Head shape is variable but perhaps more like GRSC in many individuals. Iridescence color is usually unreliable in hybrids. Extensive white on bill, pale gray flanks and white fore-flanks with RNDU "spur." Secondaries white and primaries darker but perhaps often with subtle white wash throughout.
Superficially similar to Tufted Duck x scaup. Extremely difficult to separate from Ring-necked Duck x Lesser Scaup. Note the (usually?) paler primaries especially. Head shape should only be used in addition to other features. Bill size and bill nail may be useful on some individuals. Look for features used to separate pure LESC and GRSC.
Media:
Status
Status
Exists in the wild in North America.
Ring-necked Duck x Lesser Scaup (Aythya collaris x affinis)
Ring-necked Duck x Lesser Scaup (Aythya collaris x affinis)
Back slate gray, intermediate between parent species. Head shape is variable but perhaps more like LESC in many individuals. Iridescence color is usually unreliable in hybrids. Extensive white on bill, pale gray flanks and white fore-flanks with RNDU "spur." Secondaries white and primaries darker with a clear contrast between them.
Superficially similar to Tufted Duck x scaup. Extremely difficult to separate from Ring-necked Duck x Greater Scaup. Note the (usually?) darker primaries especially. Head shape should only be used in addition to other features. Bill size and bill nail may be useful on some individuals. Look for features used to separate pure LESC and GRSC.
Media:
https://macaulaylibrary.org/asset/217821831
https://macaulaylibrary.org/asset/57709471
https://macaulaylibrary.org/asset/57709511 - Left
Status
Status
Exists in the wild in North America.
Ferruginous Duck x Baer's Pochard (Aythya nyroca x baeri)
Ferruginous Duck x Baer's Pochard (Aythya nyroca x baeri)
Ferruginous x Tufted Duck (Aythya nyroca x fuligula)
Ferruginous x Tufted Duck (Aythya nyroca x fuligula)
Ferruginous Duck x Greater Scaup (Aythya nyroca x marila)
Ferruginous Duck x Greater Scaup (Aythya nyroca x marila)
Information:
Media:
Tufted Duck x Greater Scaup (Aythya fuligula x marila)
Tufted Duck x Greater Scaup (Aythya fuligula x marila)
Back slate gray, intermediate between parent species. Head shape is variable but perhaps more like GRSC in many individuals. Iridescence color is usually unreliable in hybrids. Secondaries and primaries with extensive white throughout.
Superficially similar to Ring-necked Duck x scaup. Extremely difficult to separate from Tufted Duck x Lesser Scaup. Note the bright white primaries especially. Head shape should only be used in addition to other features. Bill size and bill nail may be useful on some individuals. Look for features used to separate pure LESC and GRSC. Tuft more compact and solid-looking on hybrids than on pure TUDU. Even when small, the tuft of pure TUDU is more wispy and hair-like than hybrids; that of hybrids looks more like an extension of the scaup crest.
Media:
https://macaulaylibrary.org/asset/300529571
https://macaulaylibrary.org/asset/300534651
https://macaulaylibrary.org/asset/216381231
https://macaulaylibrary.org/asset/216606521
Status
Status
Present in the wild throughout North America and Eurasia.
Tufted Duck x Lesser Scaup (Aythya fuligula x affinis)
Tufted Duck x Lesser Scaup (Aythya fuligula x affinis)
Back slate gray, intermediate between parent species. Head shape is variable but perhaps more like GRSC in many individuals. Iridescence color is usually unreliable in hybrids. Secondaries white and primaries darker with subtle white wash throughout.
Superficially similar to Ring-necked Duck x scaup. Extremely difficult to separate from Tufted Duck x Greater Scaup. Note the darker primaries especially. Head shape should only be used in addition to other features. Bill size and bill nail may be useful on some individuals. Look for features used to separate pure LESC and GRSC. Tuft more compact and solid-looking on hybrids than on pure TUDU. Even when small, the tuft of pure TUDU is more wispy and hair-like than hybrids; that of hybrids looks more like an extension of the scaup crest.
Media:
https://macaulaylibrary.org/asset/610059732
Status
Status
Present in the wild throughout North America with some records from Europe.
New Zealand x Lesser Scaup (Aythya novaeseelandiae x affinis)
New Zealand x Lesser Scaup (Aythya novaeseelandiae x affinis)
Information:
Media:
Canvasback x Lesser Scaup (Aythya valisineria x affinis)
Canvasback x Lesser Scaup (Aythya valisineria x affinis)
Information:
Media:
https://macaulaylibrary.org/asset/474294081
📷 - Possible. LESC seems more likely the parent than GRSC based on head shape.Â
Tufted Duck x King Eider (Aythya fuligula x Somateria spectabilis)
Tufted Duck x King Eider (Aythya fuligula x Somateria spectabilis)
Information:
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Tufted Duck x Hooded Merganser (Aythya fuligula x Lophodytes cucullatus)
Tufted Duck x Hooded Merganser (Aythya fuligula x Lophodytes cucullatus)
Information:
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