The American Ornithological Society’s (AOS) Committee on Classification and Nomenclature of North and Middle American Birds (a.k.a. NACC) has re-lumped Pacific-slope and Cordilleran Flycatchers into the species named Western Flycatcher.
AOS Supplement of Taxonomic Changes for 2022
Each year at this time the American Ornithological Society’s (AOS) Committee on the Classification and Nomenclature of North and Middle American Birds (NCAA) publishes updates to the Checklist of North American Birds. The report provides a window into our deepening understanding of birds and their place in various ecosystems.
