Heads up: Some or all of the identifications affected by
this split may have been replaced with identifications of Zoothera. This
happens when we can't automatically assign an identification to one of the
output taxa.
Review identifications of Zoothera dauma 512769
Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2019. The eBird/Clements checklist of birds of the world: v2019. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/ (Link)
I think the Zoothera dauma 13018 range is correct because it correctly doesn't include the Zoothera neilgherriensis portion which IUCN lumps with Zoothera dauma
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.
Atlas and range of 13018 are wrong, but don't affect the split