After a day or two of the wren's singular uneasiness, we discovered at least one object of his concern. It was a chipmunk, whom we had often noticed perched on the highest point of the little ledge of rocks near the nest. He seemed to be attending strictly to his own affairs, but after a good deal of "dear-r-r"-ing, the wren flew furiously at him, almost, if not quite, hitting him, and doing it again and again. The little beast did not relish this treatment and ran off, the bird following and repeating the assault. This was undoubtedly the foe that he had been troubled about all the time. On the tenth or eleventh day of their lives (as I believe) I examined the babies in the nest a little more closely than before. I even touched them with my finger on head and beak. They looked sleepily at me, but did not resent it. If the mother were somewhat bigger, I should suspect her of giving them "soothing syrup," for they had exactly the appearance of being drugged. They were not overfed; I never saw youngsters so much let alone. The parents had nothing like the work of the robin, oriole, or blue jay. They came two or three times, and then left for half an hour or more, yet the younglings were never impatient for food. The morning that the young wrens had reached the age of twelve days (that we knew of) was the 22d of July, and the weather was intensely warm. On the 21st we had watched all day to see them go, sure that they were perfectly well able. Obviously it is the policy of this family to prepare for a life of extraordinary activity by an infancy of unusual stillness. Never were youngsters so perfectly indifferent to all the world. In storm or sunshine, in daylight or darkness, they lay there motionless, caring only for food, and even that showed itself only by the fact that all mouths were toward the front. The under one of the pile seemed entirely contented to be at the bottom, and the top ones not to exult in their position; in fact, so far as any show of interest in life was concerned, they might have been a nestful of wooden babies. On this morning, as we dragged ourselves wearily over the hot road to the ravine, we resolved that no handful of wrenlings should force us over that road again. Go off this day they should, if--as my comrade remarked--"we had to raise them by hand." My first call was at the nest, indifferent whether parents were there or not, for I had become desperate. There they lay, lazily blinking at me, and filling the nest overfull. The singer came rushing down a branch, bristled up, blustering, and calling "Dear-r-r-r!" at me, and I hoped he would be induced to hurry up his very leisurely brood.