Birds

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

More Questions from Birds
Which bird is the mascot for "Cocoa Puffs"?
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What type of bird is on the album cover of Stevie Nicks' "Bella Donna"?
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What is the common name of the bird Goura cristata?
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What term, usually reserved for birds, is used for a group of camels?
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Unlike most birds, penguins cannot do what?
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What is the common name of the bird Amazilia cyanura?
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The Northern Spotted Owl is a what?
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What is the common name of the bird Argusianus argus?
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