The Collaborative International Dictionary of English v.0.48:

Barred owl \Barred" owl"\ (Zool.)
   A large American owl (Syrnium nebulosum); -- so called from
   the transverse bars of a dark brown color on the breast.
   [1913 Webster]

WordNet (r) 3.0 (2006):

barred owl
    n 1: large owl of eastern North America having its breast and
         abdomen streaked with brown [syn: barred owl, Strix
         varia]