Kaytee Northeast Regional Blend attracts more backyard birds*. The science behind this extraordinary mix is based on seed preferences and visual perception of songbirds typically found in the North Eastern United States. Our regional seed blends have been independently field tested by researchers at leading universities and proven to attract more birds than either black oil sunflower seed or other non-regional blends. Preferred 3-to-1 over black oil sunflower and other blends by songbirds nationwide.|Formula specially designed to attract regional birds.|Our regional seed blends have been independently field tested by researchers at leading universities and proven to attract more birds than either black oil sunflower seed or other non-regional blends.