Heads up: Some or all of the identifications affected by
this split may have been replaced with identifications of Dicrurus. This
happens when we can't automatically assign an identification to one of the
output taxa.
Review identifications of Dicrurus hottentottus 8267
Short-tailed Drongo Dicrurus striatus and Palawan Drongo D. palawanensis are split from Hair-crested Drongo D. hottentottus (Clements 2007:579)
Summary: The Short-tailed Drongo of the southern Philippines, and the Palawan Drongo of the southwestern Palawan group of islands are now considered distinct species.
Details: As with most taxa long subsumed in the Dicrurus hottentottus complex (e.g., Vaurie 1962), both D. striatus and D. palawanensis were originally named as full species. The molecular phylogeny of Shakya et al. (2020) is consistent with treating striatus plus samarensis as subspecies of D. balicassius rather than D. hottentottus, but the difference in tail shape argues against this treatment (previously adopted by Gill et al. 2023). Dicrurus striatus was tentatively split by del Hoyo and Collar (2016), followed by Allen (2020) and Gill et al. (2023, IOC v.13.2) and WGAC and Clements et al. (2023) adopt this treatment. Dicrurus palawanensis (plus probably cuyensis) is shown in Shakya et al. (2020) to be better treated as a full species, and this is also followed by WGAC and Clements et al. (2023).
English names: The English names follow those in use in del Hoyo and Collar (2016), Allen (2020), and Gill et al. (2023, IOC v.13.2).
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/ (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.