Birds

What are the rounded areas on the bird’s face covered with feathers which are also called facial discs?

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What U.S. state nicknamed the "Green Mountain State" has the hermit thrush as its state bird?
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What is the area between the flanks on each side of a bird?
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What is this long-necked bird called?
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What is the common name of the bird Hylonympha macrocerca?
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What is the common name of the bird Metallura iracunda?
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What bird is on the Illinois State flag?
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What U.S. state nicknamed "Tar Heel State" has the cardinal as its state bird?
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What is the state bird of Utah?
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