My attention was first directed to the broad-tailed hummer by seeing him darting about in the air with the swiftness of an arrow, sipping honey from the flower cups, and then flying to the twigs of a dead tree that stood in the marsh. There he sat, turning his head this way and that, and watching me with his keen little eyes. It was plain he did not trust me, and therefore resented my presence. Though an unwelcome guest, I prolonged my call for several hours, during which I made many heroic but vain attempts to find his nest. But what was the meaning of a sharp, insect-like buzzing that fell at intervals on my ear? Presently I succeeded in tracing the sound to the hummer, which utters it whenever he darts from his perch and back again, especially if there is a spectator or a rival near at hand, for whom he seems in this way to express his contempt. It is a vocal sound, or, at least, it comes from his throat, and is much louder and sharper than the _susurrus_ produced by the rapid movement of his wings. This I ascertain by hearing both the sounds at the same time. But the oddest prank which this hummer performs is to dart up in the air, and then down, almost striking a bush or a clump of grass at each descent, repeating this feat a number of times with a swiftness that the eye can scarcely follow. Having done this, he will swing up into the air so far that you can scarcely see him with the naked eye; the next moment he will drop into view, poise in mid-air seventy-five or a hundred feet above your head, supporting himself by a swift motion of the wings, and simply hitching to right and left in short arcs, as if he were fixed on a pivot, sometimes meanwhile whirling clear around. There he hangs on his invisible axis until you grow tired watching him, and then he darts to his favorite perch on the dead tree. No doubt John Vance Cheney had in mind another species when he composed the following metrical description, but it aptly characterized the volatile broad-tail as well: "Voyager on golden air, Type of all that's fleet and fair, Incarnate gem, Live diadem, Bird-beam of the summer day,-- Whither on your sunny way? * * * * * Stay, forget lost Paradise, Star-bird fallen from happy skies."