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| common white-eye Aythya nyroca; Ferruginous Duck (Aythya nyroca); ferruginous pochard Aythya nyroca; ferruginous white-eye Aythya nyroca; white-eyed pochard Aythya nyroca | |||
| white-eyed pochard (Aythea nyroca) | |||
| common pochard (Aythya nyroca); white-eyed pochard (Aythya nyroca); ferruginous duck (Aythya nyroca) | |||
| ferruginous duck (Aythya nyroca) | |||
| ferruginous pochard (Aythya nyroca) | |||
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Moorente : 5 phrases, 2 sujets |
| Général | 1 |
| Ornithologie | 4 |