ornīthĭas, ae, m., = ὀρνιθίας,
the bird-wind , a wind that blows in spring and brings with it the birds of passage: Favonium quidam a. d. VIII. Cal. Mart. Chelidoniam vocant, ab hirundinis visu: nonnulli vero Ornithian, uno et sexagesimo die post brumam, ab adventu avium, flantem per dies novem,