The Collaborative International Dictionary of English v.0.48:

Screech \Screech\, n.
   A harsh, shrill cry, as of one in acute pain or in fright; a
   shriek; a scream.
   [1913 Webster]

   Screech bird, or Screech thrush (Zool.), the fieldfare;
      -- so called from its harsh cry before rain.

   Screech rain.

   Screech hawk (Zool.), the European goatsucker; -- so called
      from its note. [Prov. Eng.]

   Screech owl. (Zool.)
   (a) A small American owl (Scops asio), either gray or
       reddish in color.
   (b) The European barn owl. The name is applied also to other
       species.
       [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Scops owl \Scops" owl`\ [NL. scops, fr. Gr. ? the little horned
   owl.] (Zool.)
   Any one of numerous species of small owls of the genus
   Scops having ear tufts like those of the horned owls,
   especially the European scops owl (Scops giu), and the
   American screech owl (Scops asio).
   [1913 Webster] Scoptic