Bill of Gadwall

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The bill of the Gadwall Duck, showing the comb-like ‘teeth’ that they are known for.

Keywords

bird, duck, fowl, beak, adaptation, water fowl

Galleries

Bird Anatomy, Birds: D-E, Birds: F-G

Source

John H. Finley ed. Nelson's Perpetual Loose-Leaf Encyclopaedia (vol. 5) (New York, NY: Thomas Nelson and Sons, 1917)

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