Arthur Cleveland Bent, Life Histories of North American Shore Birds…
“ In the ecstasy of the mating season a single bird may indulge himself (?) in a kind of dance flight alone. He rises high above the hills, sweeping the sky in great graceful circles not unlike the stately flight of the sparrow hawk, so smooth and calm it seems. From time to time he utters the shrill, clarion call of the mating season, or the soft coo-yee that is most common about the nesting grounds. Then suddenly he drops wildly, tumbling and tossing like a night jar at sunset, as suddenly to break his fall and soar for miles on still, outstretched wings, not a movement noticeable. ”
