https://birdspain.blogspot.com/2014/12/aythya-nyroca-x-fuligula-hybrid.html
Aythya nyroca x fuligula [Hybrid Ferruginous x Tufted Duck]
On 20 November 2014 a female presumed hybrid Ferruginous x Tufted Duck was seen at Cal Tet lagoon, Llobregat Delta, El Prat de Llobregat, Ba...
aythya nyrocaxhybridtuftedduck
https://ast.wikipedia.org/wiki/Aythya_nyroca
Aythya nyroca - Wikipedia
aythya nyrocawikipedia