By the time sixteen days were over, there were no longer eggs beneath the fluffy feathers that had covered them. Instead, there were two little balls of down, though you couldn't have seen them either, unless you had been about near enough to touch them; for the downy children of Mis were as dappled as his mate and her eggs, and they had, from the moment of their hatching, the instinct for keeping still if danger came near. [Illustration: _Peaceful enough, indeed, had been the brooding days._] Peaceful enough, indeed, had been the brooding days of Mother Nomer. Something of the noise and bustle, to be sure, of the city streets came up to her; but that was from far below, and things far off are not worth worrying about. Sometimes, too, the sound of voices floated out from the upper windows of the building, quite near; but the birds soon became used to that. When the twins were but a few days old, however, their mother had a real scare. A man came up to take down some electric wires that had been fastened not far from the spot that was the Nomer home. He tramped heavily about, throwing down his tools here and there, and whistling loudly as he worked. All this frightened little Mother Nomer. There is no doubt about that, for her heart beat more and more quickly. But she didn't budge. She couldn't. It was a part of her camouflage trick to sit still in danger. The greater the danger, the stiller to sit! She even kept her eyes nearly shut, until, when the man had cut the last and nearest end of wire and put all his things together in a pile ready to take down, he came to look over the edge of the roof-wall. As he bent to do this, he brushed suddenly against her. Then Mother Nomer sprang into the air; and the man jumped, in such surprise that, had it not been for the wall, he would have fallen from the roof. It would be hard to tell which was the more startled for a moment--man or bird. But Mother Nomer did not fly far. She fell back to the roof some distance from her precious babies and fluttered pitifully about, her wings and tail spread wide and dragging as she moved lamely. She did not look like a part of the pebbly roof now. She showed plainly, for she was moving. She looked like a wounded bird, and the man, thinking he must have hurt her in some way, followed her to pick her up and see what the trouble was. Three times he almost got her. Almost, but not quite. Crippled as she seemed, she could still fumble and flutter just out of reach; and when at last the man had followed her to a corner of the roof far from her young, Mother Nomer sprang up, and spreading her long, pointed wings, took flight, whole and sound as a bird need be.