A document that includes: the opinion of a Federal agency, bureau, or service, and/or the National Marine Fisheries Service (NMFS) as to whether a Federal action is likely to jeopardize the continued existence of listed species or result in the destruction or adverse modification of designated critical habitat; a summary of the information on which the opinion is based; and a detailed discussion of the effects of the action on listed species or designated critical habitat. Depending upon the determination of jeopardy or non-jeopardy, the BO may contain reasonable and prudent alternatives, a statement of anticipated take of listed animals, and conservation recommendations for listed plants.

a USFWS statement of whether or not a federal action would jeopardize the existence of an endangered or threatened species, or result in destruction or degradation of critical habitat

Under ESA section 7, all Federal agencies are required, "in consultation with and with the assistance of the Secretary, to insure that any action authorized, funded, or carried out by such agency is not likely to jeopardize the continued existence of any threatened or endangered species or result in the destruction or adverse modification of designated critical habitat." Thus, before a permit can be issued, "a written statement setting forth the Secretary's opinion and a summary of the information on which the opinion is based" that the issuance of the permit is not likely to jeopardize any protected species must be obtained.