Heads up: Some or all of the identifications affected by
this split may have been replaced with identifications of Horizocerus. This
happens when we can't automatically assign an identification to one of the
output taxa.
Review identifications of Horizocerus hartlaubi 512156
Eastern Dwarf Hornbill Horizocerus granti is split from Black Dwarf (now Western Dwarf) Hornbill H. hartlaubi (Clements 2007:229)
Summary: The Congo River separates two very distinct forms of Black Dwarf Hornbill, now recognized as separate species, Eastern and Western Dwarf Hornbill.
Details: Horizocerus granti was originally described as a distinct species by Hartert (1895), but has long been treated as a subspecies of the Black Dwarf Hornbill H. hartlaubi (e.g., Peters 1945). The several morphological differences between these taxa (e.g., Hartert 1895, del Hoyo and Collar 2014) appear consistent with a parapatric distribution across the Congo River. Thus, WGAC and Clements et al. (2023) agrees with the HBW and BirdLife International (2022) treatment of H. granti as specifically distinct.
English names: The English names Western Dwarf Hornbill H. hartlaubi and Eastern Dwarf Hornbill H. granti are used as these combine more familiar elements of the name with geographic descriptors than do the names used in HBW and BirdLife International (2022).
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.
Looks fine