Find the word definition

The Collaborative International Dictionary
Nidification

Nidification \Nid`i*fi*ca"tion\, n. [Cf. F. nidification.] The act or process of building a nest.

Douglas Harper's Etymology Dictionary
nidification

"nest-building," 1650s, from nidify, from Latin nidus "a nest" (see nest (n.)) + -ify.

Wiktionary
nidification

n. The building of a nest.