Wallowing is when bison roll on the prairie to give themselves "dust baths." Wallowing creates a saucer-like depression called a wallow out on the prairie. Wallows were once a common features of the plains; usually these wallows are dust bowls without any vegetation.
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The Field Milkvetch has a colorful flower which is often overlooked because it tends to grow hidden in the grass. Color can vary to reddish-purple. More...