While I am watching a pair of pewees gather lichens from an old maple for their beautiful shallow nest, the barn-swallows shoot by with mud for their adobe huts. Now and then one pulls from the mud a few fine rootlets--perhaps of the white violet or gold thread growing there--and carries them off. They evidently know their trade. A chestnut warbler appears with some plant-fiber in her bill, and gives a cluck of surprise and disgust to find some one on the ground where she thought to have her secluded and private estate. She hesitates with the down still in her bill; it is evident what she must be thinking; but at length she decides to risk it, and enters the huckleberries. She has, of course, gone into the bushes a long way from the nest. One has great sympathy with the birds in their little circumventions and dissimulations, knowing their tribulations. They live among their numerous foes much as did the early settlers in this land,--that is to say, in spite of them. The weasel, the owl, and the cat--the terrible cat--are appointed to decimate the population of birds. In the several nests of warblers, I am observing, the thrifty housewife is evidently the home-builder, whereas the male seems to take it upon himself merely to cheer and encourage her. After she has constructed a framework she settles herself in this and builds the wall around her, quite as if she were fitting a garment to herself. Her little ways while so engaged are distinctly feminine. To think that she has never been taught her trade, has perhaps never before fitted such a garment, and she is already deft and expert! The pair seem to take an almost human satisfaction in their home. Now and again they appear to talk it over together. Who can doubt they have some pleasure in this preparation, that they have bird-plans and bird-hopes? We do not really know, a bird till we have found its nest and seen it at home. When I came upon the nest of the snowbird in the midst of a clearing in the mountains, it was like visiting the house for the first time of one I had known for years--a person of some distinction at that. It was placed high and dry on a tussock in a flaming patch of hawkweed. She had an eye for the practical, and knew better than to put her house where the cellar might be flooded. The four greenish mottled eggs were her one priceless treasure, which was to her as life itself. They were warm, and the whole aspect of the nest was sweet and inviting. It appeared to breathe some feminine element, so dainty was it, so begirt with flowers.