Owls cannot turn their eyes in the sockets, so they have to turn the whole head to see to one side. Many of them have tufts of feathers like horns, which they can stand up or lay down as they choose. These are called horned owls. An owl's legs are covered with feathers, sometimes down to the toes. The whole plumage of this bird is soft and fluffy, so that he can fly without making any noise. This is important to him, for he lives mostly on mice, and he never could catch one if he made much noise getting about. The owl's mate looks like him, and--what is unusual among birds--she is larger than he. Because they come out in the evening, when we cannot see them well, we know very little of their ways. They are more often heard than seen. Their voices are generally mournful, but that is no reason why they should be feared. All birds have control over some of their feathers, that is, they can make them stand up or lie down as they choose. But owls have more than any other bird. An owl can alter his shape or size so that he will look like another bird. Mr. Bolles says that a large owl can change from a mass of bristling feathers a yard wide, to a slim, sleek brown post only a few inches wide. When he does this, one cannot see him, though he may be in plain sight. His colors blend with a tree trunk, or stump, and he can stand without stirring for an hour, and likes to do it. Mr. Bolles had owls in the house, and watched them closely. He has told us some curious things about their ways. He says that when one steps daintily across the floor, his feathers tuck themselves up as a lady holds up her gown. This moving of the feathers sometimes looks very droll. When eating, the feathers around the mouth, which might get soiled, draw back out of the way. And when an owl wants to hide his food, he stands over it, and the feathers droop down like a curtain to screen it from view. When Mrs. Bolles wanted to sketch an owl, he kept changing his shape all the time, though he did not seem to move at all. [Illustration] Another man who had a pet owl says that the bird would stand before him and throw back his breast feathers each side, just as a man throws open his coat. The owlets come out of the egg dressed in soft, fluffy down. In some of the family it is gray, in others it is snowy white. They are carefully fed and reared by their loving parents. A funny story is told by a man who wanted to see what was in an owl's nest. He lifted the mother bird out, and to his surprise the whole family came out with her. She held on to one little one, and each one held on to the next, and so he had the whole owl family in a cluster, like a bunch of grapes.