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del Hoyo, J., Elliott, A. and Sargatal, J. 1999. Handbook of the Birds of the World, vol. 5: Barn-owls to Hummingbirds. Lynx Edicions, Barcelona, Spain.
Donald, P.F., Fernando, E., Brown, L., Busana, M., Butchart, S.H.M., Chng, S., Colina, A.d.l., Ferreira, J.M., Jain, A., Jones, V.R., Lapido, R., Malsch, K., McDougall, A., Muccio, C., Nguyen, D., Outhwaite, W., Petrovan, S.O., Stafford, C., Sutherland, W.J., Tallowin, O. & Safford, R. 2024 (in press). Assessing the global prevalence of wild birds in trade.
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IUCN. 2024. The IUCN Red List of Threatened Species. Version 2024-2. Available at: https://www.iucnredlist.org. (Accessed: 22 October 2024).
Schuchmann, K. L. 1999. Trochilidae (Hummingbirds). In: del Hoyo, J.; Elliott, A.; Sargatal, J. (ed.), Handbook of the birds of the world, pp. 468-680. Lynx Edicions, Barcelona, Spain.
Stotz, D.F., Fitzpatrick, J.W., Parker, T.A. and Moskovits, D.K. 1996. Neotropical Birds: Ecology and Conservation. University of Chicago Press, Chicago.
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Recommended citation
BirdLife International (2024) Species factsheet: Amethyst-throated Sunangel Heliangelus amethysticollis. Downloaded from
https://datazone.birdlife.org/species/factsheet/amethyst-throated-sunangel-heliangelus-amethysticollis on 25/11/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 25/11/2024.