Keel-billed Toucan

Including its bill, the Keel-billed Toucan ranges in length from around 17 to 22 inches (42–55 cm). Their large and colorful bill averages around 5–6 in (12–15 cm), about one-third of its length. It typically weighs about 380–500 grams (13.4 oz.–1.1 lbs.)  While the bill seems large and cumbersome, it is in fact a spongy, hollow bone covered inkeratin, a very light and hard protein.

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