When house hunting, this bird will take a snug cavity in a tree, or an empty building. He does not despise an old mining shaft, or a burrow in the ground. He delights in a church steeple or a barn. Almost any place that is quiet and out of sight of the world will suit him. All day the barn owl stays at home. But in the evening he comes out for his dinner, and then there is havoc among the small animals. Rats, ground squirrels, mice, bats, small snakes, grasshoppers, and almost anything else that is eatable are welcome to him. He should be protected because he is so useful. This bird is an amiable fellow too. He has been known to live pleasantly in a church tower with pigeons, whom he could easily kill to eat if he wished. He is a hearty eater himself, besides feeding a family of five or six little fuzzy white owlets great quantities of food. One of these owls has lived for years in a tower of the Smithsonian Institution in Washington. In the Zoölogical Collection of that city, there was, not long ago, another of the family alive. Wishing to have more of them in the Zoo, some one watched the nest of the tower bird. When her little family of seven was about ready to fly, he took them away, and gave them to their caged relative. She promptly adopted the whole party, and reared them with the greatest care. No doubt she was glad to have something to do. Life in a cage must be very tiresome for wild birds and beasts. Mr. Reed of Philadelphia has told us how a pet barn owl threw up the castings. These, you know, are the bones and skin of mice and other creatures which are thrown up awhile after eating. He would bow his head and shake it very hard. Then raise it and jerk out the little ball. This bird was very tame. The place where he liked best to sit was on the arm or shoulder of his master. If the man wanted to do anything except play with him, he had to get a stuffed bird to amuse the living one. It was like a doll for a baby girl. When the owl was not perfectly comfortable, he kept up a constant cry, so his master had to keep him well entertained and fed. The note of the barn owl is a wild screech. One is sometimes heard making this sound, but he is never heard flying, for, like other owls, he is dressed in soft feathers that make no rustle. FOOTNOTE: [27] See Appendix, 26. XXXIV THE HAWK AND EAGLE FAMILY (_Falconidæ_)[28] THIS is a family of birds of prey. That is, birds who live entirely on living animals, which they hunt and catch for themselves. Owls are also birds of prey, but they do their hunting by night, while this family work by day. [Illustration: SPARROW HAWK] Like all birds, hawks are well fitted for what they have to do. They have long wings, so that they can fly swiftly and long at a time, to follow up the prey. They have sharp, curved claws, made for grasping and holding things. Their hooked beak is the best kind for cutting and tearing meat.