Many of our merry little bird friends, both male and female, wear bonnets or hoods, which we think are tied closely under the chin. Others, like the woodpeckers, wear collars of lace. This lace is made of loose, filmy feathers, as different from the feathers of the breast or back as embroidery is different from closely woven cloth. [Illustration: Ruby-crowned Kinglet.] When a warm day comes, you will see the birds lift their wings and hold their feathers close, and pant with their bills open. How tired they look, and the song or twitter which you hear is a weary one, as if they were saying, "The oldest inhabitant never saw so warm a day." In a cold snap the dress fluffs out, and the bird looks much larger than he did on the warm day. It seems as if he were saying, "See me make my wraps as big and thick as I can." Many of the birds that sit up and fly about all the long cold night are more warmly clothed than most day birds, who tuck themselves into bed as soon as the sun sets. Examine the owls and see how warmly they dress. Many of them wear trousers of feathers, reaching to the knees or coming low down to the ankles. Often their feet are covered with feathers down to their sharp claws. Their necks, too, are all wrapped up with feathers, like comforters or woollen scarfs, so that only the bill may be seen. [Illustration: Short-eared Owl.] It gets pretty cold in the middle of the night, and Mr. Owl knows how to wrap himself up. Besides, with these thick, soft feathers he can fly after his prey without making any noise. A bird's shoes and stockings are strong and never seem to wear out. If they become worn, they are mended so quickly you never know the difference. The foot and leg are covered with scales, like the scales on a lizard. Birds and lizards are much alike; in fact, they are a sort of cousin or distant relative, so that they dress alike in the matter of shoes and stockings. Only the lizard wears scales all over, while a bird wears them only for shoes and stockings. The bird has found out that feathers are better for flying in the air, while the lizard, crawling as he always does, is perfectly happy with only scales for clothes. All birds, big and little, wear warm, fleecy underclothes, better and softer than flannel. You can see bits of these underclothes at the bottoms of the knee trousers or dresses, or, if you happen to be holding a bird in your hand, you can part the outer clothes and see and feel the delicate down. Sometimes, when a bird ruffles his outer garments in washing himself, the soft warm underclothes are in plain sight.