I must tell you that Chrissie and Sharley and May had learnt something about these groups from a book of which they are very fond; it is called _The First Year of Scientific Knowledge_, and there are pictures in it of the different birds, beasts, and fishes which are mentioned. Now, let us think of some of the birds in the first group. Birds of Prey are those which hunt for their food, and eat the flesh of other birds, or of small animals, such as rats, and mice, or of snakes. All these birds--vultures, hawks, owls--have sharp hooked beaks, and long claws, also very sharp; they fly quickly, and soon overtake their prey, whether they hunt by day or by night. The two birds of prey most often mentioned in the Bible are the Raven and the Eagle. You remember how, when the terrible flood, which God sent upon the earth because of the violence and wickedness of men, was over, and the Ark rested upon the mountains of Ararat, Noah opened the window of the Ark, and sent forth a raven. This bird of prey could find food for itself, as it "went forth to and fro, until the waters were dried up from off the earth," and it never came back to Noah; unlike the gentle dove who found no rest for the sole of her foot, but twice returned to her refuge, the second time carrying in her bill the fresh green "olive-leaf plucked off," which showed Noah that the waters were indeed gone. How wonderfully God, who feeds the young ravens which cry to Him, used those birds of prey to bring to Elijah "bread and flesh in the morning, and bread and flesh in the evening," all the time that they were commanded to feed the prophet in his lonely hiding-place by the brook Cherith. The Raven is the patriarch among birds; it lives to be a hundred years old--beyond the age of man! The Eagle, the king of birds, is a large and beautiful creature with very strong wings, and has its home in rocky places, difficult to reach. Like all birds who live upon prey which they catch alive, it is bold and fierce. There is a verse which speaks of it as "hasting to the prey." Eagles seize rabbits, hares, lambs, and young deer, and have even been known to attack a pony. They often carry off ducks and wild birds to their rocky eyrie, as food for their young ones. The Sea-eagle lives upon fish which swim near the surface of the waves; it sees them afar off with its keen eyes, and darts down upon them. [Illustration: "THE OWL WILL BUILD BESIDE A BARN, OR IN A HOLLOW TREE."]