The state's most important rivers are the Missouri, rising in southwest Montana and flowing north and then east across the state, and the Yellowstone, which crosses southeastern Montana to join the Missouri in North Dakota near the Montana border.
Habitats. Hoverflies can be found in every biotope but not in deserts. Each species tends to prefer a certain type of habitat and is limited to a distinct range within the country. There are relatively few species with broad habitat tolerances that enable them to be distributed throughout southern Africa.
Most albatrosses are found in the Southern Hemisphere: Antarctica, Australia, South Africa, South America. Only 3 albatross species are found exclusively in the North Pacific (Hawaii, Japan, California and Alaska): the Short-tailed albatross, Black-footed albatross and Laysan albatross.