In accord with AOS-SACC (Proposals 780 and 781) and AOS-NACC (Chesser et al. 2020b), the sequence of hummingbirds in the group previously listed between Chlorostilbon and Hylocharis is revised, based primarily on McGuire et al. (2014) and Hernández-Baños et al. (2020). In accord with AOS-NACC (Chesser et al. 2020b), change the scientific name of Dusky Hummingbird from Cynanthus sordidus to Phaeoptila sordida (Stiles et al. 2017a, b), based on genetic evidence that the traditional genus Cynanthus is not monophyletic (McGuire et al. 2014, Hernández-Baños et al. 2020).
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/ (Link)
Unintended disagreements occur when a parent (B) is
thinned by swapping a child (E) to another part of the
taxonomic tree, resulting in existing IDs of the parent being interpreted
as disagreements with existing IDs of the swapped child.
Identification
ID 2 of taxon E will be an unintended disagreement with ID 1 of taxon B after the taxon swap
If thinning a parent results in more than 10 unintended disagreements, you
should split the parent after swapping the child to replace existing IDs
of the parent (B) with IDs that don't disagree.
