A reference to mammals, reptiles, amphibians, and fish that make more or less elaborate preparations for the reception of their new little ones: The first thing in this sequence is the selection of a definite nest site, in or on which the eggs are protected and the young are to live.

Two primary elements determining most nest preparations are the types of environments and the kinds of young ones when they arrive from their eggs or at birth are to exist.

Go to this Cliff Swallows of Santee Lakes page so you can see significant information about swallows and their nests.