In accord with AOS-NACC (Chesser et al. 2020b), change the scientific name of Blue-tailed Hummingbird from Amazilia cyanura to Saucerottia cyanura (Stiles et al. 2017a, b), based on genetic evidence that the traditional genus Amazilia is not monophyletic (McGuire et al. 2014).
Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, J. A. Gerbracht, D. Lepage, B. L. Sullivan, and C. L. Wood. 2021. The eBird/Clements checklist of Birds of the World: v2021. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/ (連結)