The smaller species of the Humming birds are less in size than the great fly wasp, and more slender than the drone. Their beak is a fine needle and their tongue a slender thread. Their little black eyes are like two shining points, and the feathers of their wings so delicate that they seem transparent. Their short feet, which they use very little, are so tiny one can scarcely see them. They rarely alight during the day. They have a swift continual humming flight. The movement of their wings is so rapid that when pausing in the air, the bird seems quite motionless. One sees him stop before a blossom, then dart like a flash to another, visiting all, plunging his tongue into their hearts, flattening them with his wings, never settling anywhere, but neglecting none. He hastens his inconstancies only to pursue his loves more eagerly and to multiply his innocent joys. For this light lover of flowers lives at their expense without ever blighting them. He only pumps their honey, and for this alone his tongue seems designed. The vivacity of these small birds is only equaled by their courage, or rather their audacity. Sometimes they may be seen furiously chasing birds twenty times their size, fastening upon their bodies, letting themselves be carried along in their flight, while they peck fiercely until their tiny rage is satisfied. Sometimes they fight each other vigorously. Impatience seems their very essence. If they approach a blossom and find it faded, they mark their spite by a hasty rending of the petals. Their only voice is a weak cry of _Screp, screp_, frequent and repeated, which they utter in the woods from dawn until at the first rays of the sun they all take flight and scatter over the country. The Ruby-throat is the only native Humming bird of eastern North America, where it is a common summer resident from May to October, breeding from Florida to Labrador. The nest is a circle an inch and a half in diameter, made of fern wood, plant down, and so forth, shingled with lichens to match the color of the branch on which it rests. Its only note is a shrill, mouse-like squeak. THE HOUSE WREN. All the children, it seems to me, are familiar with the habits of Johnny and Jenny Wren; and many of them, especially such as have had some experience with country life, could themselves tell a story of these mites of birds. Mr. F. Saunders tells one: "Perhaps you may think the Wren is so small a bird he cannot sing much of a song, but he can. The way we first began to notice him was by seeing our pet cat jumping about the yard, dodging first one way and then another, then darting up a tree; looking surprised, and disappointingly jumping down again.