Birds

On birds, what is the hinge where the mandibles meet?

More Questions from Birds
Which of the following is a bird of prey?
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What is the common name of the bird Heliangelus regalis?
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When do swans usually mate?
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What is the state bird and state tree of Alaska?
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What is the state bird and state tree of Kentucky?
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What is the top part of the birds head called?
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What is the common name of the bird Eudyptes schlegeli?
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The last known member of what bird species died in 1914?
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