Next to the red-shouldered hawk, the red-tailed hawk is the most common of the large hawks in Eastern North America. Although the farmers shoot it on sight, and the barn-yard fowls hurry to shelter at its cries, it is one of the farmer's best friends, because of the great number of grasshoppers and mice it captures. Its cry is a loud, high-pitched, "long-drawn out squealing whistle which to my ear suggests the sound of escaping steam." (Chapman.) September Twenty-seventh You hear the mitchella-vine spoken of as "partridge berry," "twin-berry," and "squaw-berry." It is a small-leaved vine, very common in woods and shaded thickets. Winter does not harm its fruit, so it is a welcome treat to many birds and mammals in early spring. The buds appear in pairs, which form a double fruit with two eyes, or navels, thus giving it the name of "twin-berry." Notes September Twenty-eighth The water skate, or water strider, resembles somewhat a "granddaddy longlegs." It runs about over the surface of the water in search of microscopic insects, casting grotesque shadows on the bottom. It does not dive like the water boatman, but if it chooses it can take wing, and is often seen to spring into the air and grasp its prey. September Twenty-ninth Our common sunfish builds a nest of stones and gravel on the bottom of a stream. "The male watches the nest and drives away all intruders. The species is usually hardy in captivity, but is subject to fungus attacks, which yield readily to a treatment with brackish water." (Bean.) September Thirtieth On moonlight nights skunks come out into the fields to feed upon beetles and grasshoppers. They are keen scented, and you will sometimes see where their claws have assisted in securing an insect that their nose has detected in the ground. They will often approach a man carrying a lantern, and after sniffing at it a few times will walk away and resume their hunt. [Illustration: SKUNK HUNTING GRASSHOPPERS.] Notes =October= October First This is the month when many of our birds depart for their southern winter resorts. The common ones that leave this week are the scarlet tanager, ovenbird, chimney swift, wood thrush, indigo bunting, and redstart. October Second The workers and drone bumblebees die at the approach of winter, but the queen takes shelter under the bark of trees, in stone piles and in other places which offer protection, where she remains all winter. She then comes out and gathers moss and grass for a nest, or she may appropriate the deserted nest of a meadow mouse. After making several wax cells, she fills them with pollen and honey, deposits an egg in each cell, and when the young hatch, they feed upon the sweets. October Third