Many birders are understandably frustrated by changes in birds’ names, and in the sequence of species on checklists. It can be hard to keep up, but each revision generally highlights a significant advance in our understanding of birds and is worth some reflection.
It is important to point out that the changes are the judgments of expert ornithologists who base their decisions on published research. There is no “last word,” and modifications will continue. Any apparent inconsistencies or occasional reversals reflect the difficult and subjective nature of the decisions.