Barlow's Lark is lumped with Dune Lark following Donald and Alström (in preparation), who show that barlowi is essentially indistinguishable from nominate erythrochlamys, and that the taxa patae and cavei are better treated as subspecies (or perhaps even color morphs of erythrochlamys). Genetic divergence, at least as measured by mitochondrial DNA, between Barlow's and Dune larks is very shallow (Alström et al. 2013), and their songs appear to be indistinguishable.
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.
