Sabine's gull treated as comprising a monotypic genus; it is only placed within the genus "Larus" when the genus is enlarged. The black bill and notched tail are almost unique within the gulls, as they are shared only with the swallow-tailed gull of the Galapagos. On the basis of this the two species were often thought to be each other's closest relatives, a hypothesis ruled out by a number of behaviour and ecological differences. Mitochondrial DNA studies confirmed that they are not closely related, and the closest relative of the Sabine's gull is now thought to be the ivory gull, another Arctic
Four Mile Fork, Virginia Four Mile Fork, Virginia Four Mile Fork is an unincorporated community in Spotsylvania County, Virginia south of the city limits of Fredericksburg. Its name derives from the junction of State Route 208, U.S. Route 1, and U.S. Route 1 Business, which is located approximately four miles south of downtown Fredericksburg. Four Mile Fork was also known as Thomas' Store. The community began developing as a suburb of Fredericksburg in the mid-20th century, with tract housing spreading out from the city along U.S. Route 1 Business (or Lafayette Boulevard). Commercial development remained predominantly small-scale and scattered until after the completion of