Polioptilidae

bird family

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In passeriform: Annotated classification
Family Polioptilidae (gnatcatchers and gnatwrens) Dainty, slender, tiny, 10 to 14 cm (4 to 5.5 inches), with long, thin, pointed bills, operculate nostrils partly exposed, and rictal bristles. Rounded wing with 10th primary much less than half as long as 9th; long, rounded tail constantly moving. Blue-gray…
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