nidification

[,nidifi'keiʃən]

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

This rare event is probably a case of reversion to the longlost, abriginal instinct of nidification.: 这稀有的事实, 也许是它们久已失去的造巢育雏的本能之重现.