Birds

What is the lower most ridge on the lower mandible on a bird called?

More Questions from Birds
What is this honking bird called?
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Bird friendly coffee means what as it relates to the environment?
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What is the state bird of Utah?
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What is the common name of the bird Odontophorus guttatus?
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What is the common name of the bird Lampornis amethystinus?
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Which bird has been spotted on the slopes of Mount Everest, five miles above sea level?
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What U.S. state nicknamed "Tar Heel State" has the cardinal as its state bird?
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Which species best matches this description, "type of grouse that live in North American grasslands"?
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