Green-winged Teal are North America's smallest dabbling duck, at just over a foot long and weighing less than a pound. The male has a cinnamon brown head with a band of green behind the eye. Both males and females have a green bar on the wing that gleams like an emerald when the sun strikes it. During courtship, up to 25 males may court a single female at once.More info and transcript at BirdNote.org. Want more BirdNote? Subscribe to our weekly newsletter. Sign up for BirdNote+ to get ad-free listening and other perks. BirdNote is a nonprofit. Your tax-deductible gift makes these shows possible.