Listing Taylor's Checkerspot Butterfly and Streaked Horned Lark and Designation of Critical Habitat: Proposed Rule

We, the U.S. Fish and Wildlife Service, propose to list the Taylor's checkerspot butterfly as an endangered species, and to list the streaked horned lark as a threatened species under the Endangered Species Act of 1973, as amended (Act). We additionally propose to designate critical habitat for these species. These determinations fulfill our obligations under a settlement agreement. These are proposed regulations, and if finalized, the effect of these regulations will be to add these species to the List of Endangered and Threatened Wildlife and to designate critical habitat under the Endangered Species Act.