Ernest Thompson Seton,
Wild Animals at Home
“ A small herd of a dozen or so is kept in a fenced range near the Mammoth Hot Springs, where the traveller should not fail to try for pictures, and with them he will see the cowbirds, that in some regions replace the true buffalo-birds. Perched on their backs or heads or running around them on the ground are these cattle birds as of yore, like boats around a man-o'-war, or sea-gulls around a whale; living their lives, snapping up the tormenting flies, and getting in return complete protection from every creature big enough to seem a menace in the eyes of the old time King of the Plains. ”
