Birds

On birds, what is the area below the eye and bill on the sides of the chin that stretches downwards?

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What is the common name of the bird Gorsachius goisagi?
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Which species can be described as a farm chicken?
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What is the common name of the bird Metallura iracunda?
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What is the common name of the bird Tigrisoma fasciatum?
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What is the common name of the bird Polyplectron inopinatum?
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What is the common name of the bird Cypseloides rothschildi?
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What is the state bird and state tree of Connecticut?
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What is the study of birds called?
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