Bruce E. Radabaugh (1974). "Kirtland's Warbler and Its Bahama Wintering Grounds". The Wilson Bulletin. 86 (4). Wilson Ornithological Society: 374–383. JSTOR4160537.
nationalgeographic.com
ngm.nationalgeographic.com
Tod Hunter (August 2010). "Blue Holes". National Geographic. Archived from the original on 21 July 2010.
Marcot, Bruce G. (1995). Owls of old forests of the world(PDF) (Report). General Technical Reports. U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. p. 26. PNWGTR-343. Retrieved 2 March 2020.