Long-tailed sylph (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Long-tailed sylph" in English language version.

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birdlife.org

HBW and BirdLife International (2020) Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world Version 5. Available at: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v5_Dec20.zip [.xls zipped 1 MB] retrieved May 27, 2021

BirdLife International (2016). "Long-tailed Sylph Aglaiocercus kingii". IUCN Red List of Threatened Species. 2016: e.T22733886A95068341. doi:10.2305/IUCN.UK.2016-3.RLTS.T22733886A95068341.en. Retrieved 18 February 2022.
Altshuler, D.L. and P. F. D. Boesman (2020). Long-tailed Sylph (Aglaiocercus kingii), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.lotsyl1.01 retrieved February 18, 2022

Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, D. F. Lane, J. F. Pacheco, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 31 January 2022. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved February 1, 2022

Gill, F.; Donsker, D.; Rasmussen, P., eds. (January 2022). "Hummingbirds". IOC World Bird List. v 12.1. Retrieved January 15, 2022.