{"fact":"Crows on Vancouver Island have a higher percentage of the Northwestern genetic makeup than those on the adjacent mainland, showcasing the unique gene flow due to their island environment.","context":"However, Vancouver Island crows had a higher frequency of the Northwestern ND2 haplogroup (74%) than crows on the nearby mainland (26%; χ2=15.8, p<0.0005). Crows on Vancouver Island also averaged 44% more Northwestern nuDNA ancestry than adjacent mainland crows.","source":"David L. Slager; Kevin L. Epperly; Renee R. Ha; Sievert Rohwer; Chris Wood; Caroline Van Hemert; John Klicka, Cryptic and extensive hybridization between ancient lineages of American crows, 10.1111/mec.15377","index":659}