The fallout in August of several species of pelagic birds due to Hurricane Hilary, particularly along the lower Colorado River, was the most notable highlight of the fall 2023 season (1 August to 30 November). This note will describe the records generated by that event, as well as other fall highlights.

Hudsonian Godwit
Hudsonian Godwit, Stanfield, Pinal County, 17 September 2023. Photo by Pierre Deviche.