What's Behind Those Lustrous Red Feathers?

Male Northern Cardinals, Scarlet Tanagers, and House Finches all have striking red plumage that’s thought to play a role in attracting mates. Males with the brightest red feathering tend to have the best luck with the females. Scientists think that a male’s redness signals to females that he has just what it takes to help produce superior offspring. But just because a male is a brilliant shade of red... does that mean he’s stronger or more fit than his duller-colored competitors? It might be so, but it’s complicated… 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. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.