Crane Hawks of Central and South America and African Harrier-Hawks both have legs that bend forward and backward. Each bird’s wonderfully peculiar leg adaptation is completely original — it evolved all on its own — even though the end result is the same. It's a fascinating example of a phenomenon called convergent evolution.More info and transcript at <a href="https://www.birdnote.org/podcasts/birdnote-daily/double-jointed-hawks-and-convergent-evolution" target="_blank">BirdNote.org</a>.Want more BirdNote? <a href="https://www.birdnote.org/subscribe-newsletter" target="_blank">Subscribe</a> to our weekly newsletter. Sign up for <a href="https://birdnote.supercast.com/" target="_blank">BirdNote+</a> to get ad-free listening and other perks. BirdNote is a nonprofit. Your <a href="https://www.birdnote.org/about/great-ways-support-birdnote" target="_blank">tax-deductible gift </a>makes these shows possible.  Hosted by Simplecast, an AdsWizz company. See <a href="https://pcm.adswizz.com">pcm.adswizz.com</a> for information about our collection and use of personal data for advertising.

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