It is one of the capital advantages of the ornithologist's condition that he is rarely called upon to spend his time and strength for naught. If he fails of the particular object of his search, he is all but sure to be rewarded with something else. For example, while I was unsuccessfully playing the spy upon a pair of my solitary vireos, a female tanager suddenly dropped into her half-built nest in a low pine-branch, at the same time calling softly to her mate, who at once came to sit beside her. Unfortunately, one of the pair very soon caught sight of me, and they made off in haste. I lingered about, till finally the lady appeared again, with her beak full of sticks, standing out at all points of the compass. She was so jealous of my espionage, however, that it looked as if she would never be rid of her load. No sooner did she alight in the tree than she began to crane her neck, staring this way and that, and _chipping_ nervously; then she shifted her perch; then out of the tree she went altogether; then back again; then off once more; then back within a yard of the nest; then away again, till at last my patience gave out, and I left her mistress of the field. All this while the male was in sight, flitting restlessly from tree to tree at a safe distance. I have never witnessed a prettier display of connubial felicity than this pair afforded me during the minute or two which elapsed between my discovery of them and their discovery of me. I felt almost guilty for intruding upon such a scene; but, if they could only have believed it, I intended no harm, nor have I now any thought of profaning their innocent mysteries by attempting to describe what I saw. The male tanager, with his glory of jet black and flaming scarlet, is in curious contrast with his mate, with whose personal appearance, nevertheless, he seems to be abundantly satisfied. Possibly he looks upon a dirty greenish-yellow as the loveliest of tints, and regards his own dress as nothing better than commonplace, in comparison. Like the rose-breasted grosbeak and the wood thrush, however, he is brought up with the notion that it belongs to the female to be the carpenter of the family; a belief in which, happily for his domestic peace, the female herself fully concurs. As a general thing, handsomely dressed people live in handsome houses (emphasis should perhaps be laid on the word _dressed_), and it would seem natural that a like congruity should hold in the case of birds.