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[kraws-bil, kros-] /ˈkrɔsˌbɪl, ˈkrɒs-/
any bird belonging to the genus Loxia, of the finch family, characterized by mandibles curved so that the tips cross each other when the bill is closed.
1665-75; cross- + bill2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for crossbill


any of various widely distributed finches of the genus Loxia, such as L. curvirostra, that occur in coniferous woods and have a bill with crossed mandible tips for feeding on conifer seeds
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for crossbill

any of the three birds of the genus Loxia, noted for their crossed mandibles, with which they pry open conifer cones to get at the seeds. Crossbills are in the family Carduelidae, sometimes considered a subfamily of the Fringillidae (order Passeriformes). The red crossbill (L. curvirostra) and the white-winged, or two-barred, crossbill (L. leucoptera) occur throughout the colder regions of the Northern Hemisphere, and each has a small population isolated in the New World tropics. The parrot crossbill (L. pytyopsittacus) of northern Eurasia has a larger bill.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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