A close cousin to the Mallard, the black duck will be ... and hens have olive bills. Black ducks appear especially dark in flight, but the underside of their wings are white—clearly visible ...

TAMPA, Fla. -- Looking to recapture some of last week's magic -- in which a mallard duck appeared on the field in a 48-14 victory over the Carolina Panthers-- the Tampa Bay Buccaneers enlisted the ...