American Black duck pair (Anas rubripes). Drake has the solid yellow bill; hen has greenish mottled bill.
American Black duck pair -- hen and drake (Anas rubripes). Hen is feeding.
American Black duck pair (Anas rubripes). Drake has the solid yellow bill; hen has greenish mottled bill.
American Black duck pair (Anas rubripes). Drake has the solid yellow bill; hen has greenish mottled bill.
American Black duck pair -- hen and drake (Anas rubripes).
American Black duck pair (Anas rubripes). Drake has the solid yellow bill; hen has greenish mottled bill.
