Os'ci·nes noun plural [ Latin oscen , -inis .] (Zoology) Singing birds; a group of the Passeres, having numerous syringeal muscles, conferring musical ability. Found on http://www.encyclo.co.uk/webster/O/36
Members of Suborder Passeri, which is one of the two large suborders of Order Passeriformes (perching birds); oscines also are known as songbirds or true songbirds. Oscines have particularly complex voice boxes, which allow them to sing more complex songs than other birds. Found on https://academy.allaboutbirds.org/bird-academys-a-to-z-glossary-of-bird-ter