Anas crecca carolinensis →
American Green-winged Teal
Anas crecca crecca →
Eurasian Green-winged Teal
Taxonomic hierarchy
- Casuariiformes
- Anseriformes
- Galliformes
- Columbiformes
- Cuculiformes
- Caprimulgiformes →
- Podargidae →
- Caprimulgiformes
- Gruiformes
- Charadriiformes
- Phoenicopteriformes
- Podicipediformes
- Gaviiformes
- Sphenisciformes
- Procellariiformes
- Ciconiiformes
- Suliformes
- Pelecaniformes
- Cathartiformes
- Accipitriformes
- Strigiformes
- Bucerotiformes
- Coraciiformes
- Piciformes
- Falconiformes
- Psittaciformes
- Passeriformes