Lewis & Short

aegĭthus, i, m., = αἴγιθος, a small bird, considered by some the titmouse, Parus caeruleus, Linn.; by others the red linnet, Fringilla linaria, Linn., Plin. 10, 74, 95, § 206; cf. Aristot. Hist. An. 9, 15.