This smallest of the Terns has many habits in common with the _Sterna hirundo_. "In the elegance of its buoyant flight," says McGillivray, "as it skims over the water or shoots along its way to and from its breeding-place, the tiny creature is an object of admiration to every lover of nature. You may see a pair coming up from a distance, flying at the height of a few yards over the waves, their long wings winnowing the air and impelling them on by starts as they wind their way in undulating and graceful movements. Suddenly their flight is arrested over a large pool left on the sands by the retreating tide. With quick beats of their wings they hover almost stationary over the water, with downward-pointed bills, intently searching for their prey beneath. One drops with upraised wings, dips for a moment, and rises with a small fish in its bill; the other is equally successful. Onward they proceed, now and then emitting their shrill cry. Far ahead is seen a flock engaged in picking up their prey, and onward the stragglers speed to join their kindred." The Little Tern has the bill slightly longer than the head, and, like the Common Tern, slender, nearly straight, much compressed, tapering, and acute; the eyes and feet small; plumage soft and blended; wings long, narrow, and pointed; tail long and deeply forked; upper part of the head and nape black; neck, back, and wings light greyish blue; hind part of the back and tail white; length to the end of the tail about ten inches; wings twenty-one inches. This species reaches our shores in the beginning of May, and settles along the whole eastern and southern coast, from the Land's End to the Orkneys, but is rare on the west coast. The Firth of Forth, the sands of Barry, near Dundee, a place at the mouth of the Don, and another at the Ythan, are noted as their haunts, as are the sands of Strathbeg Loch, and the sands between Burghead and the mouth of the Findhorn. It is also abundant on the sea-coasts of Holland and France, where it feeds on fish-spawn and small winged insects. The Noddy (_Sterna stolida_), which frequents rivers and the borders of lakes, especially marshes, makes its nest among the reeds and water-lily leaves: this is the species most plentiful in America. The Silver-winged Tern (_Sterna leucoptera_) inhabits the bays and gulfs of the Mediterranean, and is only an accidental visitor to the north of France. The Arctic Tern (_Sterna arctica_) is a native of the Arctic Circle, and regularly visits the sea-coast of the north of France. We may also mention the Whiskered or Marsh Tern (_Sterna leucupareia_), the Gull-billed Tern (_Sterna anglica_), the Roseate Tern (_Sterna Dougalli_), the Sandwich Tern (_Sterna cautiaca_), and the Tschegruna, or Caspian Tern (_Sterna caspica_), all of which either breed upon the British coast, or are frequent visitors there, although they rarely reach France. THE SCISSORS-BILLS, OR SEA SKIMMERS (_Rynchops_, Linn.).