Oscine

oscine \ˈä-ˌsīn\ adjective: of or relating to a large suborder (Oscines) of passerine birds (as larks, shrikes, finches, orioles, and crows) characterized by a vocal apparatus highly specialized for singing

Etymology: New Latin Oscines, suborder name, from Latin, plural of oscin-, oscen songbird, bird giving omens by its cry, from obs-, ob- in front of, in the way + canere to sing

I often discover new words in thematic bursts. The past few posts, for example, came out of a recent session of dictionary-hopping where one word led naturally to the next. Look for a new theme tomorrow.