It’s been said that if someone knows only three birds, one of them will be the crow. They’re common, easy to see, and even easier to hear. But crow voices are complicated. Altogether, crows may use 30 sound elements in different combinations, and one of the most intriguing is their song. Unlike many birds, crows don’t sing loudly to attract mates from a distance. Instead, they sing softly — and at close range — during courtship, with a mix of soft cooing, rattles, growls, bowing movements, and mutual nuzzling.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.