1. (noun) tropical American heron related to night herons

• boat-billed heron
• boatbill
• cochlearius cochlearius

2. (noun) diving ducks of North America having a bluish-grey bill

• bluebill
• scaup
• scaup duck

3. (noun) freshwater duck of the northern hemisphere having a broad flat bill

• anas clypeata
• shoveler
• shoveller

1. (noun) tropical American heron related to night herons

• cochlearius
• genus cochlearius

2. (noun) diving ducks of North America having a bluish-grey bill

• aythya
• genus aythya

3. (noun) freshwater duck of the northern hemisphere having a broad flat bill

• anas
• genus anas

4. (noun) small birds of the Old World tropics having bright plumage and short wide bills

• eurylaimidae
• family eurylaimidae

1. (noun) diving ducks of North America having a bluish-grey bill

• aythya affinis
• lake duck
• lesser scaup
• lesser scaup duck
• aythya marila
• greater scaup

1. (noun) tropical American heron related to night herons

• heron

2. (noun) diving ducks of North America having a bluish-grey bill

• duck

3. (noun) freshwater duck of the northern hemisphere having a broad flat bill

• duck

4. (noun) small birds of the Old World tropics having bright plumage and short wide bills

• passeriform bird
• passerine