In accord with AOS-NACC (Chesser et al. 2021), the nomenclature of Phalacrocorax (cormorants and shags), and the sequence of genera and species, are revised, following Kennedy and Spencer (2014) and Kennedy et al. (2019). Phalacrocorax is partitioned into six genera, which are listed in the sequence Poikilocarbo, Urile, Phalacrocorax, Gulosus, Nannopterum, and Leucocarbo. Change the scientific name of European Shag from Phalacrocorax aristotelis to Gulosus aristotelis.
Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, J. A. Gerbracht, D. Lepage, B. L. Sullivan, and C. L. Wood. 2021. The eBird/Clements checklist of Birds of the World: v2021. 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.
