Integrated Taxonomic Information System (ITIS): Furnarius rufus (TSN 560127)itis.gov. Viitattu 17.8.2009. (englanniksi)
iucnredlist.org
BirdLife International: Furnarius leucopusIUCN Red List of Threatened Species. Version 2013.2. 2012. International Union for Conservation of Nature, IUCN, Iucnredlist.org. Viitattu 29.1.2014. (englanniksi)