Large mammals, such as Roosevelt elk, black-tail deer, black bear, and coyote, use grasslands as foraging areas and/or travel routes to adjacent lands. Smaller mammals, such as voles and mice, thrive in grasslands. These smaller mammals serve as prey for raptors such as red-tailed hawks, northern harriers, American kestrels, and various species of owls, all of which use open grasslands as hunting grounds. Songbird and shorebird species use grasslands to rest, nest and feed.
3 of 8. Vitamin D really does the body good. In addition to aiding in the absorption of calcium to build strong muscles and bones, vitamin D helps reduce inflammation and regulate the immune system. Sources: Fatty fish, liver oils, fortified milk products, fortified cereals, meats, eggs, sunlight.
1. Vitamin D. Vitamin D plays a very important role in immune and muscle function. There are numerous studies showing that vitamin D is essential for overall immune system function. Studies have shown that proper vitamin D levels in the body are associated with muscle strength and performance. B6 nutrients can be found in soybeans, butter, brown rice, and fish. 2  B12 (cyanocobalamin) is important for the maintenance of nerve tissue and is essential for the metabolism of fats and carbohydrates, energy metabolism, and cell regeneration. 3  B12 nutrients can be found in milk, poultry, eggs, meat, and liver.