National Geographic : 1947 Feb
U.S.Navy-National Park Service A Canopy of Wings Flutters over Bush Key. From Afar the Sooty Terns Resemble an Expanding, Contracting Cloud ofSmoke This illusion is created by only half the colony, the others minding the eggs. For recreation the sooties love aerialmaneuvers, soaring almost outof sight. Audubon found their staccato cries "indeed deafening." These terns nest under the shadow ofFort Jefferson.