The three-genus treatment as 1) Red-rumped Parrot Psephotus haematonotus; Mulga Parrot Psephotus varius, Hooded Parrot Psephotus dissimilis, Golden-shouldered Parrot Psephotus chrysopterygius, and Paradise Parrot Psephotus pulcherrimus; 2) Red-capped Parrot Purpureicephalus spurius; and 3) Greater Bluebonnet Northiella haematogaster; Naretha Bluebonnet Northiella narethae is untenable based on phylogenetic analyses (Irestedt et al. 2019, Smith et al. 2022). The amount of morphological variation encompassed by an expanded Psephotus is deemed excessive and hence a four-genus treatment is adopted, with four of the species in Psephotus moved to Psephotellus, as follows: Psephotellus varius, Psephotellus dissimilis, Psephotellus chrysopterygius, and Psephotellus pulcherrimus.
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.
