Aechmophorus occidentalis x AECHMOPHORUS clarkii Status: Rare regular spring and fall migrant west and west central. Rare casual breeder Keith Co. Documentation: Photograph: 25 May 2020 Box Butte Reservoir SRA, Dawes Co (Leukering, Dunning; eBird.org). Taxonomy: Hybridization occurs between the two Aechmophorus species. Konter (2011) found around 3.5% of birds in sympatric breeding populations in […]