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.
Vitamins D, E and the Bs. The B vitamins support energy production and protein metabolism, both of which are key to muscle building. You usually get enough B vitamins through your diet, but vitamin B-12 may be lacking in vegans and vegetarians, so check with your doctor to see if you might need a supplement.
B vitamins. An array of B vitamins are essential to muscle strength and tone: 1  B1 (thiamin) is important for protein metabolism and the formation of hemoglobin. 2  Hemoglobin carries oxygen to cells, including muscle cells, and without oxygen energy, production is compromised.