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  • Illustration showing the difference between male and female huia
    Rights: Public domain Published 19 October 2023 Size: 500 KB Referencing Hub media

    The male and female huia had a distinct difference in their beak morphology. The female had a longer curved beak and the male a shorter beak as shown in this illustration.

    Huia (Heteralocha acutirostris): male and female by Johannes Keulemans, from the book A History of the Birds of New Zealand by Sir Walter Buller.

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