Nest cycle is the time required for a species to build a nest, lay and hatch eggs or give birth, and fledge or wean young. Most songbirds and small mammals will attempt to breed repeatedly during the breeding season. Polygyny is a mating system in which successful males mate with more than one female. Population is a biologically, geographically, or politically defined group of animals composed of all of the individuals of a species in a particular area. Population dynamics is the study of changes in the number and composition of individuals in a population, and the factors that influence those changes.
Preservation is the protection of a resource by withdrawing it from use.
Restoration refers to returning a resource to some prior condition by re-establishing ecological processes and functions. Riparian is a term that refers to the habitat adjacent to streams, lakes, ponds, and wetlands that is influenced by the presence of water. Sex ratio is the proportion of males to females in a population. Shelterbelts are human-made habitats created by planting shrubs and trees in rows to protect homesteads and fields from wind. Threatened Species are defined under the Endangered Species Act as those species likely to become endangered in the foreseeable future.