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Butterfly rests on tall flowering plant.

The purpose of the Endangered Species Act (ESA) is to provide a means to conserve the ecosystems upon which endangered and threatened species depend and provide a program for the conservation of such species. The ESA directs all federal agencies to participate in conserving these species....

Mojave desert tortoise

Since two-thirds of federally listed species have at least some habitat on private land, and some species have most of their remaining habitat on private land, the U.S. Fish and Wildlife Service (Service) has developed an array of tools and incentives to protect the...

Adult island marble butterfly resting on a blade of grass.

The U.S. Fish and Wildlife Service (Service) considers candidate species to be those plants and animals that are candidates for listing under the Endangered Species Act (ESA). These are species for which we have enough information regarding their biological status and threats to propose them as...

Juvenile gopher tortoise

Conservation banking is a market-based system for conserving species and their habitat. It consists of a partnership between a landowner, one or more government agencies, and the community of developers and others who implement or fund projects that adversely affect endangered or threatened...