Presently there came the roar of the pigeons' returning wings and the crash of their feet on the slate roof above him, but they did not yet come in again to their homes. He saw the shadow of this roof cast on another roof below him, and the restless shadows of the pigeons along the edge. He observed the grey lichen covering most of the lower roof, and the neat round patches of newer yellow lichen on the shapeless mass of the grey. He heard a duck call out slowly six or seven times. He heard a man come into a stable below him and lead a horse away. A hound woke and cried out. Some jackdaws, disturbed from some tower, passed over high in the air with boisterous voices. He saw big clouds go hurrying along the tops of far hills. He heard a wild pigeon call from a neighbouring tree. Some men went by talking. And after a while he perceived to his astonishment what he had had no leisure to notice on his previous visit to Erl, that even the shadows of houses moved; for he saw that the shadow of the roof under which he sat had moved a little on the roof below, over the grey and yellow lichen. Perpetual movement and perpetual change! He contrasted it, in wonder, with the deep calm of his home, where the moment moved more slowly than the shadows of houses here, and did not pass until all the content with which a moment is stored had been drawn from it by every creature in Elfland. And then with a whirring and whining of wings the pigeons began to come back. They came from the tops of the battlements of the highest tower of Erl, on which they had sheltered awhile, feeling guarded by its great height and its hoary age from this strange new thing that they feared. They came back and sat on the sills of their little windows and looked in with one eye at the troll. Some were all white, but the grey ones had rainbow-coloured necks that were scarce less lovely than those colours that made the splendour of Elfland; and Lurulu as they watched him suspiciously where he sat still in a corner longed for their dainty companionship. And, when these restless children of a restless air and Earth still would not enter, he tried to soothe them with the restlessness to which they were accustomed and in which he believed all folk that dwelt in our fields delighted. He leaped up suddenly; he sprang on to a slate-built house for a pigeon high on a wall; he darted across to the next wall and back to the floor; but there was an outcry of wings and the pigeons were gone. And gradually he learned that the pigeons preferred stillness.