Birds

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

More Questions from Birds
What color is the male cardinal bird?
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What is the common name of the bird Phaeochroa cuvierii?
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What is the common name of the bird Cynanthus sordidus?
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What is the stripe along the very top part of the bird's head through the crown?
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What is the state bird and state tree of Utah?
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What is this common neighborhood bird?
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What is the state bird of Arkansas?
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Although birds usually live in trees, which kind can be found thriving in cities around the world?
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