“Have you seen a bluebird yet?” some friend will ask me, as March comes on. Or it will be, “I have seen my first bluebird!” as if seeing a first bluebird were something very wonderful and important. And so it is; for the sight of the first March bluebird is the last sight of winter and the first sight of spring. The brown of the fertile earth is on its breast, the blue of the summer sky is on its back, and in its voice is the clearest, sweetest of all invitations to come out of doors. Where has he spent the winter? Look it up. What has brought him back so early? Guess at it. What does he say as he calls to you? Listen. What has John Burroughs written about him? Look it up and read. II You must see the skunk-cabbage abloom in the swamp. You need not pick it and carry it home for the table--just see it. But be sure you see it. Get down and open the big purple-streaked spathe, as it spears the cold mud, and look at the “spadix” covered with its tiny but perfect flowers. Now wait a minute. The woods are still bare; ice may still be found on the northern slopes, while here before you, like a wedge splitting the frozen soil, like a spear cleaving through the earth from the other, the summer, side of the world, is this broad blade of life letting up almost the first cluster of the new spring’s flowers. Wait a moment longer and you may hear your first bumblebee, as he comes humming at the door of the cabbage for a taste of new honey and pollen. III Among the other early signs of spring, you should see a flock of red-winged blackbirds! And what a sight they are upon a snow-covered field! For often after their return it will snow again, when the brilliant, shining birds in black with their red epaulets make one of the most striking sights of the season. IV Another bird event that you should witness is the arrival of the migrating warblers. You will be out one of these early May days when there will be a stirring of small birds in the bushes at your side, in the tall trees over your head--everywhere! It is the warblers. You are in the tide of the tiny migrants--yellow warblers, pine warblers, myrtle warblers, black-throated green warblers--some of them on their way from South America to Labrador. You must be in the woods and see them as they come. V You should see the “spice-bush” (wild allspice or fever-bush or Benjamin-bush) in bloom in the damp March woods. And, besides that, you should see with your own eyes under some deep, dark forest trees the blue hepatica and on some bushy hillside the pink arbutus. (For fear I forget to tell you in the chapter of things to do, let me now say that you should take a day this spring and go “may-flowering.”) VI