nidification

enUK

nid·i·fy

N0099200 (nĭd′ə-fī′)intr.v. nid·i·fied, nid·i·fy·ing, nid·i·fies To build a nest.
[Latin nīdificāre : nīdus, nest; see sed- in Indo-European roots + -ficāre, -fy.]
nid′i·fi·ca′tion (-fĭ-kā′shən) n.

nidification

the process or instinct of nest-building.See also: Birds