McGuire, Jimmy A.; Witt, Christopher C.; Remsen, J. V.; Dudley, R.; Altshuler, Douglas L. (5 August 2008). "A higher-level taxonomy for hummingbirds". Journal of Ornithology. 150 (1): 155–165. doi:10.1007/s10336-008-0330-x.
Von Wehrden, H. (2008). "The giant hummingbird (Patagona gigas) in the mountains of central Argentina and a climatic envelope model for its distribution". Wilson Journal of Ornithology. 120 (3): 648–651. doi:10.1676/07-111.1.
Oritz-Crespo, F. I. (1972). "A new method to separate immature and adult hummingbirds". The Auk. 89 (4): 851–857. doi:10.2307/4084114. JSTOR4084114.
Villegas, Mariana; Garitano-Zavala, Álvaro (2010). "Bird community responses to different urban conditions in La Paz, Bolivia". Urban Ecosystems. 13 (3): 375–391. doi:10.1007/s11252-010-0126-7.
Hainsworth, F.R.; Wolf, L.L. (1972). "Power for hovering flight in relation to body size in hummingbirds". The American Naturalist. 106 (951): 589–596. doi:10.1086/282799. S2CID84151001.
Estades, C.F.; Vukasovic, M.A.; Tomasevic, J. A. (2008). "Giant hummingbirds (Patagona gigas) ingest calcium-rich minerals". Wilson Journal of Ornithology. 120 (3): 651–653. doi:10.1676/07-054.1. S2CID86241862.
González-Gómez, P. L.; Valdivia, C. E. (2005). "Direct and indirect effects of nectar robbing on the pollinating behavior of Patagona gigas (Trochilidae)". Biotropica. 37 (4): 693–696. doi:10.1111/j.1744-7429.2005.00088.x. S2CID84689385.
Larrea-Alcázar, Daniel M.; López, Ramiro P. (2011). "Pollination biology of Oreocereus celsianus (Cactaceae), a columnar cactus inhabiting the high subtropical Andes". Plant Systematics and Evolution. 295 (1–4): 129–137. doi:10.1007/s00606-011-0485-4.
Wester, P.; Claßen-Bockhoff, R. (2006). "Hummingbird pollination in Salvia haenkei (Lamiaceae) lacking the typical lever mechanism". Plant Systematics and Evolution. 257 (3–4): 133–146. doi:10.1007/s00606-005-0366-9. S2CID1095801.
Hainsworth, F.R.; Wolf, L.L. (1972). "Power for hovering flight in relation to body size in hummingbirds". The American Naturalist. 106 (951): 589–596. doi:10.1086/282799. S2CID84151001.
Estades, C.F.; Vukasovic, M.A.; Tomasevic, J. A. (2008). "Giant hummingbirds (Patagona gigas) ingest calcium-rich minerals". Wilson Journal of Ornithology. 120 (3): 651–653. doi:10.1676/07-054.1. S2CID86241862.
González-Gómez, P. L.; Valdivia, C. E. (2005). "Direct and indirect effects of nectar robbing on the pollinating behavior of Patagona gigas (Trochilidae)". Biotropica. 37 (4): 693–696. doi:10.1111/j.1744-7429.2005.00088.x. S2CID84689385.
Wester, P.; Claßen-Bockhoff, R. (2006). "Hummingbird pollination in Salvia haenkei (Lamiaceae) lacking the typical lever mechanism". Plant Systematics and Evolution. 257 (3–4): 133–146. doi:10.1007/s00606-005-0366-9. S2CID1095801.
Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (August 2022). "Hummingbirds". IOC World Bird List Version 12.2. International Ornithologists' Union. Retrieved 13 September 2022.