U.S. Fish and Wildlife Service

Proposal to list the monarch butterfly (Danaus plexippus), the iconic orange and black butterfly, as a threatened species and designate critical habitat under the Endangered Species Act of 1973, as amended (Act).

Determination of threatened species status under the Endangered Species Act of 1973 (Act), as amended, for the cactus ferruginous pygmy-owl (Glaucidium brasilianum cactorum), a bird subspecies found in Mexico, southern Arizona, and southern Texas.

We, the U.S. Fish and Wildlife Service (Service), designate critical habitat for the northern Mexican gartersnake (Thamnophis eques megalops) under the Endangered Species Act of 1973 (Act), as amended.

We, the U.S. Fish and Wildlife Service (Service), designate critical habitat for the western distinct population segment of the yellow-billed cuckoo under the Endangered Species Act.

Request for formal consultation with the U.S Fish and Wildlife Service (FWS) pursuant to section 7 of the Endangered Species Act of 1973.

Request for formal consultation with the U.S Fish and Wildlife Service (FWS) pursuant to section 7 of the Endangered Species Act of 1973. Includes construction, operation, maintenance, closure and reclamation and special use permit for new transmission and pipeline corridors in Gila and Pinal counties, Arizona.

The USFWS revises the proposed critical habitat for the western distinct population segment of the yellow-billed cuckoo (western yellowbilled cuckoo) (Coccyzus americanus) under the Endangered Species Act.

Forty questions and answers describing the NEPA process

Protected by the Arizona Native Plant Law. Critical habitat has been designated on approximately 7,501 hectares (18,535 acres) in Maricopa, western Pima, and Pinal counties.

Documents by Species table