Out of the very treetops while the oven-bird shouts his prayer below comes the voice of the red-eyed vireo, uttering moral platitudes from dawn till dusk. It is no wonder that some birds go wrong with this monotonous preacher steadily droning out, “Don’t do this; don’t do that,” to them all day long. The bluejays, who have robber baron blood stirring always under their gaudy military coats, jeer at this prating of platitudes and descend upon the vireo’s hanging nest and eat the eggs from it, I always think, with more gusto than in their other freebooting, and small blame to them. The red-eyed vireo leads an exemplary life, no doubt, living properly on small insects and keeping up perpetual prayer-meeting, but his self-righteous twaddle must be intensely irritating to all but impeccably good birds that have to listen to it. In gladsome relief from this was the demeanor of the Canadian warblers, also flitting daintily in the treetops. I know the authorities say that the Canadian warbler frequents low thickets, but there is no mistaking the bird with his breast and throat of clear yellow and his necklace of jet beads, and this May the leafy topmost twigs of the deciduous trees in the Chocorua region held many such. They sang their liquid warble which has in it more than a suggestion of the song-sparrow notes of the water-thrush song, and they dashed out into the free air for insects which they captured, flycatcher fashion, and then dashed back again. The Canadian warblers are migrating, feeding and singing as they go on to their nesting sites farther north, and this year their favorite food must have been hanging high, for they were up there after it. With the Canadians was the first wave of the tide of blackpolls which sweeps over the mountains, also bound north, in late May. More restless were these, constantly flitting and seeking food among the leaves, now in deciduous growth, again in the evergreens, ever moving on and ever singing their high-pitched, hissing whistle which is not so very different from the song of the black and white creeper, though a little more deliberate in movement and having a more staccato quality. So far as coloration goes one might mistake the male blackpoll for the black and white creeper were not the movements of the birds so distinctly different and the song as wiry but as soothingly crepitant as that of the cicada.