Pelatuk paruh-gading: Perbedaan antara revisi

The Little-Known Status and Distribution of the Ivory-billed Woodpecker | format = | work = Worldtwitch | publisher = | accessdaymonth = 8 July | accessyear = 2006}}</ref><ref name="Mendenhall">{{cite web | last = Mendenhall | first = Matt | authorlink = | coauthors = | year = 2005 | url = http://www.birdersworld.com/brd/default.aspx?c=a&id=471 | title = Reported Ivory-bill Sightings Since 1944 | format = | work = Birders World Magazine | publisher = | accessdaymonth = 8 July | accessyear = 2006}}</ref> tetapi banyak [[Ornitologi|Ahli Ornitologi]] percaya bahwa burung ini telah hilang sepenuhnya, dan itu dinilai telah "punah" oleh [[Perserikatan Internasional]] untuk [[IUCN]] pada tahun [[1994]]. Penilaian ini diubah kemudian menjadi "kritis" pada tempatnya bahwa spesies tersebut mungkin masih ada.<ref name="IUCN">{{cite web | last = Birdlife International | first = | authorlink = | coauthors = | year = 2005 | url = http://www.iucnredlist.org/search/details.php?species=3712 | title = IUCN Red List - Species Information - Campephilus principalis | format = | work = | publisher = IUCN | accessdaymonth = 8 July | accessyear = 2006}}</ref>