As soon as spring arrives and the ice has left the streams, hordes of May or shad fly nymphs can be found working their way against the current a few inches from the shore. Catch a few of them and put them in a tumbler of water and watch their external or "trachea" gills working. The adult insects are abundant in summer, but at this time of the year (even earlier), the stone flies which flit over the melting snow are often mistaken for May, or shad flies. [Illustration: MEADOW LARK] Notes April Fourth The name "purple finch" is very misleading, for the head, neck, breast, and throat of the bird are more crimson than purple. The female is often mistaken for a sparrow, as her color is dull, and her breast streaked. This finch often takes up its abode in the coniferous trees in the villages. "Its song bursts forth as if from some uncontrollable stress of gladness, and is repeated uninterruptedly over and over again." (Bicknell.) April Fifth If the season is not belated, you may expect to find the blood-root peeping through the rocky soil, on exposed brushy hillsides, or along the margins of the woods. You must look for it early, for its petals drop soon after the flower blossoms. The Indians used the blood-red juice which flows when the root is broken, to decorate their bodies. April Sixth The brush lots, roadways, and open forests in the Northern States, are now filled with juncoes on the way to their nesting grounds in Canada and the mountainous portions of this country. They are with us but a few weeks and will not be seen again until next fall. The pinkish bill and the two white outer tail-feathers are of great assistance in identifying this bird, for they are very conspicuous when it flies. Notes April Seventh While walking along the bank of a stream you are quite apt to surprise a pair of pickerel lying side by side in shallow water. Save for the vibration of their fins, and the movement of their gills, they do not stir. As you approach they dart off, and you see a roily spot, where they have taken shelter among the aquatic plants. April Eighth The birds having white tail-feathers, or tail-feathers that are tipped with white, which show conspicuously when the owners are on the wing, are the meadowlark, vesper sparrow, chewink, snowflake, junco, blue jay, white-breasted nuthatch, Northern shrike, kingbird, hairy woodpecker, downy woodpecker, nighthawk, and whip-poor-will. April Ninth The clustering liverwort, hepatica, or squirrel cup, with its fuzzy stems and pretty flowers of various shades of blue, grow side by side with the white wood anemone, or wind-flower. As soon as the wood anemone blossoms, a slight breeze causes the petals to fall; that is why it is called "wind-flower." [Illustration: DOWNY WOODPECKER] Notes April Tenth