Bill of Goose

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“The beak or bill of birds is composed of two bony pieces, called mandibles, surrounded by a horny substance, differing both in form and thickness, according to the habits of the species.”


Bird Anatomy


Hazlitt Alva Cuppy PH.D., Editor Beauties and Wonders of Land and Sea (Springfield, OH: Mast, Crowell & Kirkpatrick, 1895)


TIFF (full resolution)

2400×940, 450.1 KiB

Large GIF

1024×401, 73.8 KiB

Medium GIF

640×250, 39.7 KiB

Small GIF

320×125, 14.8 KiB