Any oscine passerine (suborder Passere), all of which have a complex vocal organ, the syrinx. Some species (e.g., thrushes) produce melodious songs; others (e.g., crows) have a harsh voice; and some do little or no singing. See also birdsong.
This entry comes from Encyclopædia Britannica Concise.
For the full entry on songbird, visit Britannica.com.
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