While loss of habitat has affected native animals such as the pine marten, elk, woodland caribou, and bison, others like whitetail deer and bobcat thrive. Minnesota has the nation's largest population of timber wolves outside Alaska, and supports healthy populations of black bears, moose, and gophers. Located on the Mississippi Flyway, Minnesota hosts migratory waterfowl such as geese and ducks, and game birds such as grouse, pheasants, and turkeys. It is home to birds of prey, including the largest number of breeding pairs of bald eagles in the lower 48 states as of 2007, red-tailed hawks, and snowy owls. Hawk Ridge is one of the premier bird watching sites in North America. The lakes teem with sport fish such as walleye, bass, muskellunge, and northern pike, and brook, brown, and rainbow trout populate streams in the southeast and northeast.