nidificating

from The Collaborative International Dictionary of English v.0.48

Nidificate \Nid"i*fi*cate\, v. i. [imp. & p. p. {Nidificated};
   p. pr. & vb. n. {Nidificating}.] [L. nidificare, nidificatum;
   nidus nest + -ficare (in comp.) to make. See {-fy}, and cf.
   {nest}.]
   To make a nest.
   [1913 Webster]

         Where are the fishes which nidificated in trees?
                                                  --Lowell.
   [1913 Webster]