In the 24 August 2006 edition of the Federal Register, the U.S. Department of the Interior's Fish and Wildlife Service proposed adding 152 species, removing 12 species, and correcting/updating the common or scientific names of numerous others. Reasons for the proposed revisions include birds mistakenly omitted previously, new evidence on geographic distribution, taxonomic changes, etc. In addition, the mute swan ("Cygnus olor"), which was afforded temporary protection due to court order since 2001, is formally excluded from protection in the proposal due to "nonnative and human introduced" status. The previous update to the list occurred on 5 April 1985.