YELLOWISH-BROWN HEAD DUSKY-BROWN BODY WHITE WING-LININGS IMMATURE HAS STREAKED BREAST PURPLE SPECULUM IMMATURE SIDE BREAST FEATHER ADULT MALE SIDE BREAST FEATHER ADULT FEMALE SIDE BREAST FEATHER ♂ BILL COLOR VARIES FROM SOLID GREENISH YELLOW TO HIGH CHROME YELLOW DEPENDING UPON AGE AND SEASON KILLED ♀ FEMALE BILL SHOWS VARYING AMOUNT OF BLACK SPOTTING
MOTTLED DUCK
(Anas fulvigula)
TRAILING EDGE OFTEN WHITE LIGHT TAN HEAD PURPLE SPECULUM FEET ORANGE CHIN AND THROAT PALE BUFF (WITH OR) WITHOUT STREAKING ♂ DARK BASE OF BILL BILL YELLOW, DARK NAIL ♀ DARK SPOT (often absent) VARIABLE SPOTTING
NEW MEXICAN DUCK
(Anas diazi novimexicana)
TAIL DARK. SPECULUM BLUISH PURPLE TO GREEN. WHITE EDGE ABOVE SOMETIMES ABSENT. FEET ORANGE. ♂ BILL YELLOW, DARK NAIL. CHIN PINKISH BUFF WITHOUT STREAKING. ♀ BILL DARK OLIVE OR ORANGE, DARK ON RIDGE. SMALL SPOTS NEAR BASE LIMITED OR ABSENT.
GADWALL
(Anas strepera)
BLACK RUMP WHITE BELLY WHITE SPECULUM WHITE BELLY BOTH SEXES HAVE YELLOW FEET ♂ BILL BLUISH BLACK ♀ BILL DULL ORANGE VARYING SPOTTING