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Maryland Checklist - Genus: Aythya - all-time (Total: 6)   

	Photos	Common Name	Genus	Species	Records	Category	Family	Order	Class	Kingdom
1		Canvasback	Aythya	valisineria	538	Birds	Anatidae	Anseriformes	Aves	Animalia
2		Redhead	Aythya	americana	385	Birds	Anatidae	Anseriformes	Aves	Animalia
3		Ring-necked Duck	Aythya	collaris	899	Birds	Anatidae	Anseriformes	Aves	Animalia
4		Tufted Duck	Aythya	fuligula	50	Birds	Anatidae	Anseriformes	Aves	Animalia
5		Greater Scaup	Aythya	marila	318	Birds	Anatidae	Anseriformes	Aves	Animalia
6		Lesser Scaup	Aythya	affinis	466	Birds	Anatidae	Anseriformes	Aves	Animalia