The Collaborative International Dictionary
Nidulating
Nidulate \Nid"u*late\, v. i. [imp. & p. p. Nidulated; p. pr. &
vb. n. Nidulating.] [L. nidulari, fr. nidulus, dim. of
nidus a nest.]
To make a nest, as a bird. [R.]
--Cockeram.
Wiktionary
nidulating
vb. (present participle of nidulate English)