Nevertheless, in 2006, an adult female – probably during migration – was seen and photographed at the vicinity of Tapira, in the Minas Gerais cerrado: cf. Oliveira, Adilson Luiz de; Silva, Robson Silva e (2006). "Registro de Harpia (Harpia harpyja) no cerrado de Tapira, Minas Gerais, Brasil"(PDF). Revista Brasileira de Ornitologia. 14 (4): 433–434. Archived from the original(PDF) on November 2, 2010.
"Sponsorship and Exhibition at ATBC OTS"(PDF). International Conference Celebrating the 50th Anniversary of the Association for Tropical Biology and Conservation and the Organization for Tropical Studies. 23–27 June 2013, San José, Costa Rica. 2013. Archived from the original(PDF) on February 3, 2014.
Mayr, Ernst; Cottrell, G. William, eds. (1979). Check-List of Birds of the World. Vol. 1 (2nd ed.). Cambridge, Massachusetts: Museum of Comparative Zoology. p. 376. Retrieved 2024-04-03.
Tozzer, Alfred M.; Allen, Glover M. Animal figures in the Maya codices. Archived from the original on 25 November 2021. Retrieved 25 November 2020 – via Biodiversity Heritage Library.
Tingay, Ruth E.; Katzner, Todd E. (23 February 2011). Rt-Eagle Watchers Z. Cornell University Press. pp. 167–. ISBN978-0-8014-5814-9. Retrieved 22 October 2016.
Ford, Susan M.; Lesa C. Davis (1992). "Systematics and body size: implications for feeding adaptations in New World monkeys". American Journal of Physical Anthropology. 88 (4): 415–468. doi:10.1002/ajpa.1330880403. PMID1503118.
Sherman, P. T. (1991). "Harpy eagle predation on a red howler monkey". Folia Primatologica. 56 (1): 53–56. doi:10.1159/000156528.
Rotenberg, J. A.; Marlin, J. A.; Pop, L.; Garcia, W. (2012). "First record of a Harpy Eagle (Harpia harpyja) nest in Belize". The Wilson Journal of Ornithology. 124 (2): 292–297. doi:10.1676/11-156.1.
Ford, Susan M.; Lesa C. Davis (1992). "Systematics and body size: implications for feeding adaptations in New World monkeys". American Journal of Physical Anthropology. 88 (4): 415–468. doi:10.1002/ajpa.1330880403. PMID1503118.
Nevertheless, in 2006, an adult female – probably during migration – was seen and photographed at the vicinity of Tapira, in the Minas Gerais cerrado: cf. Oliveira, Adilson Luiz de; Silva, Robson Silva e (2006). "Registro de Harpia (Harpia harpyja) no cerrado de Tapira, Minas Gerais, Brasil"(PDF). Revista Brasileira de Ornitologia. 14 (4): 433–434. Archived from the original(PDF) on November 2, 2010.
"Sponsorship and Exhibition at ATBC OTS"(PDF). International Conference Celebrating the 50th Anniversary of the Association for Tropical Biology and Conservation and the Organization for Tropical Studies. 23–27 June 2013, San José, Costa Rica. 2013. Archived from the original(PDF) on February 3, 2014.
Tozzer, Alfred M.; Allen, Glover M. Animal figures in the Maya codices. Archived from the original on 25 November 2021. Retrieved 25 November 2020 – via Biodiversity Heritage Library.