anumbius anumbii

from The Collaborative International Dictionary of English v.0.48

Thornbird \Thorn"bird`\, n. (Zool.)
   A small South American bird ({Anumbius anumbii}) allied to
   the ovenbirds of the genus {Furnarius}). It builds a very
   large and complex nest of twigs and thorns in a bush or tree.
   [1913 Webster]