Editing Nest (section)

====Structural purposes====
Nest building (nidification) is often driven by a biological urge in [[pregnant]] animals to protect one's offspring known as the [[nesting instinct]].  Animals build nests to protect their [[egg (biology)|eggs]], their offspring, or themselves from danger. The simplest nest structures are adapted to hide eggs from [[predator]]s, shield them from the sun or other environmental factors, or simply keep them from being scattered in [[ocean currents]]. In some cases, nests also help provide [[safety in numbers]] for egg-laying animals.<ref name=SDNMH>{{cite web|title=Nests and Nest-building Animals|author=Tom Deméré|author2=Bradford D. Hollingsworth|publisher=San Diego Natural History Museum|date=Spring 2002|url=http://www.sdnhm.org/archive/research/herpetology/NestBuilding.pdf |archive-url=https://ghostarchive.org/archive/20221009/http://www.sdnhm.org/archive/research/herpetology/NestBuilding.pdf |archive-date=2022-10-09 |url-status=live|access-date=August 19, 2013}}</ref>

[[File:Pandion haliaetus -Belize -building nest-8.jpg|thumb|left|A pair of [[osprey]]s building a nest.]]