We, the U.S. Fish and Wildlife Service (Service), are initiating 5-year status reviews of 23 species under the Endangered Species Act of 1973, as amended (Act). We conduct these reviews to ensure that the classification of species as threatened or endangered on the Lists of Endangered and Threatened Wildlife and Plants is accurate. A 5-year review is an assessment of the best scientific and commercial data available at the time of the review. Therefore, we are requesting submission of information that has become available since the last review of each of these species.