The Audubon Society has stopped the slaughter of grebes. Before the enactment of the laws framed by the society, these duck-like birds were killed for their snow-white breasts, which were used for decorating (?) women's hats. Grebes are now migrating to the lakes of the North, where they build floating nests of reeds. March Fourteenth The only sure way to tell a venomous snake is to kill the reptile, open its mouth with a stick, and look for the hollow, curved fangs. When not in use they are compressed against the roof of the mouth, beneath the reptile's eyes. They are hinged, as you can see if you pull them forward with a pencil. The venom is contained in a sack hidden beneath the skin at the base of each fang. March Fifteenth As a mimic and a persistent songster, the mocking-bird has no rival, but when quality is considered, I think we have several songsters that are its equal. The bobolink and the winter wren both have rollicking songs that are inspiring and wonderful, but to my ear there are no songs that equal those of the hermit thrush and the wood thrush. Still, the selection of a bird vocalist is a matter of choice which is often influenced by one's association with the singer. Notes March Sixteenth If you will look into one of the large cone-shaped paper nests of the bald-faced hornet, which hang to the limbs of the trees or under the eaves of the house, you will be almost certain to find a few house flies that have passed the winter between the folds of paper. They now show signs of life, and are ready to make their appearance during the first warm spell. March Seventeenth Before the snow has left, you are likely to see dirt-stained spots on the hillsides where the woodchuck or ground-hog has thrown out the partition of dirt which kept the winter air from his bed-chamber. Of course he has not come out for good, but on warm, sunny days he will make short excursions from his burrow to see how the season is progressing. In the early spring, before vegetation sprouts, he finds it difficult to find good food in plenty. March Eighteenth The herring gulls that have been about our harbors and bays all winter, will not remain much longer. They are about to leave for their nesting grounds, in the marshes and on the islands of New England and Canada. In the fall they will return with their young, which wear a grayish plumage. Notes March Nineteenth In winter meadow mice build neat little nests of dried grass on the ground beneath the snow. They are hollow balls, about the size of a hat crown, with a small opening in one or two sides. The outside is made of coarse, rank grass, while the lining is of the finest material obtainable. The heat from the little animals' bodies soon melts an air chamber around the nest, into which lead many tunnels through the snow. As soon as the snow has melted, you will find these nests scattered about the fields and meadows, but they are empty now. March Twentieth