The lineage of the former Charadrius plovers has been conclusively shown to be deeply paraphyletic (e.g., Černý and Natale 2022), and the genus Anarhynchus is now used for a number of species (rather than several small or monotypic genera), in addition to Zonibyx and Eudromias for one species each (adapted from Clements text)
Clements, J. F., P. C. Rasmussen, T. S. Schulenberg, M. J. Iliff, T. A. Fredericks, J. A. Gerbracht, D. Lepage, A. Spencer, S. M. Billerman, B. L. Sullivan, and C. L. Wood. 2023. The eBird/Clements checklist of Birds of the World: v2023. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/ (連結)
No point adding atlases as ranges overlap almost completely, but split still needed. Although there are a large number of observations, there are many fewer Charadrius IDs, so split shouldn't be too difficult
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.
No point adding atlases as ranges overlap almost completely, but split still needed. Although there are a large number of observations, there are many fewer Charadrius IDs, so split shouldn't be too difficult