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  • Looking up at a whio's (duck) lips.
    Rights: Rob Suisted, Nature’s Pic Images Published 4 August 2017 Size: 3.5 MB Referencing Hub media

    The whio has rubbery soft flaps on the end of its bill to help scrape its food off the surfaces of rocks. Look closely, and you’ll also see the sieve-like structures inside the bill. It uses these to sieve larvae and insects.

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