The passenger pigeon nests before danger from frost is passed; but as it lays but two eggs, probably in two successive days, the risks from this source are not great, though occasionally a heavy April snow-storm breaks them up. Which is the earliest song-bird's egg? One cannot be quite so certain here, as he can as to which the first wild flower is, for instance; but I would take my chances on finding that of the phœbe-bird first, and finding it before the close of April, unless the season is very backward. The present season (1883) a pair built their nest under the eaves of my house, and deposited their eggs, the last days of the month. Some English sparrows that had been hanging around, and doubtless watching the phœbes, threw the eggs out and took possession of the nest. How shrewd and quick to take the hint these little feathered John Bulls are! With a handful of rattling pebble-stones I told this couple very plainly that they were not welcome visitors to my premises. They fled precipitately. The next morning they appeared again, but were much shyer. Another discharge of pebbles, and they were off as if bound for the protection of the British flag, and did not return. I notice wherever I go that these birds have got a suspicion in their heads that public opinion has changed with regard to them, and that they are no longer wanted. The eggs of the phœbe-bird are snow-white, and when, in threading the gorge of some mountain trout brook, or prowling about some high, overhanging ledge, one's eye falls upon this mossy structure planted with such matchless art upon a little shelf of the rocks, with its complement of five or six pearl-like eggs, he is ready to declare it the most pleasing nest in all the range of our bird architecture. It was such a happy thought for the bird to build there, just out of the reach of all four-footed beasts of prey, sheltered from the storms and winds, and, by the use of moss and lichens, blending its nest so perfectly with its surroundings that only the most alert eye can detect it. An egg upon a rock, and thriving there,—the frailest linked to the strongest, as if the geology of the granite mountain had been bent into the service of the bird. I doubt if crows, or jays, or owls ever rob these nests. Phœbe has outwitted them. They never heard of the bird that builded its house upon a rock. "Strong is thy dwelling-place, and thou puttest thy nest in a rock." The song sparrow sometimes nests in April, but not commonly in our latitude. Emerson says, in "May-Day:"— "The sparrow meek, prophetic-eyed, Her nest beside the snow-drift weaves, Secure the osier yet will hide Her callow brood in mantling leaves." But the sparrow usually prefers to wait till the snow-drift is gone. I have never found the nest of one till long after the last drift had disappeared from the fields, though a late writer upon New England birds says the sparrow sometimes lays in April, when snow is yet upon the ground.