When other birds are still, the screech owls take up the strain, like mourning women their ancient u-lu-lu. Their dismal scream is truly Ben Jonsonian.(20) Wise midnight hags (21) It is no honest and blunt tu-whit tu-who of the poets, but, without jesting, a most solemn graveyard ditty, the mutual consolations of suicide lovers remembering the pangs and the delights of supernal love in the infernal groves. Yet I love to hear their wailing, their doleful responses, trilled along the woodside; reminding me sometimes of music and singing birds; as if it were the dark and tearful side of music, the regrets and sighs that would fain be sung. They are the spirits, the low spirits and melancholy forebodings, of fallen souls that once in human shape night-walked the earth and did the deeds of darkness, now expiating their sins with their wailing hymns or threnodies in the scenery of their transgressions. They give me a new sense of the variety and capacity of that nature which is our common dwelling. Oh-o-o-o-o that I never had been bor-r-r-r-n sighs one on this side of the pond, and circles with the restlessness of despair to some new perch on the gray oaks. Then — that I never had been bor-r-r-r-n echoes another on the farther side with tremulous sincerity, and — bor-r-r-r-n comes faintly from far in the Lincoln woods.
 I was also serenaded by a hooting owl. Near at hand you could fancy it the most melancholy sound in Nature, as if she meant by this to stereotype and make permanent in her choir the dying moans of a human being — some poor weak relic of mortality who has left hope behind, and howls like an animal, yet with human sobs, on entering the dark valley, made more awful by a certain gurgling melodiousness — I find myself beginning with the letters gl when I try to imitate it — expressive of a mind which has reached the gelatinous, mildewy stage in the mortification of all healthy and courageous thought. It reminded me of ghouls and idiots and insane howlings. But now one answers from far woods in a strain made really melodious by distance — Hoo hoo hoo, hoorer hoo; and indeed for the most part it suggested only pleasing associations, whether heard by day or night, summer or winter.
 I rejoice that there are owls. Let them do the idiotic and maniacal hooting for men. It is a sound admirably suited to swamps and twilight woods which no day illustrates, suggesting a vast and undeveloped nature which men have not recognized. They represent the stark twilight and unsatisfied thoughts which all have. All day the sun has shone on the surface of some savage swamp, where the double spruce stands hung with usnea lichens, and small hawks circulate above, and the chickadee lisps amid the evergreens, and the partridge and rabbit skulk beneath; but now a more dismal and fitting day dawns, and a different race of creatures awakes to express the meaning of Nature there.
 Late in the evening I heard the distant rumbling of wagons over bridges — a sound heard farther than almost any other at night — the baying of dogs, and sometimes again the lowing of some disconsolate cow in a distant barn-yard. In the mean-while all the shore rang with the trump of bullfrogs, the sturdy spirits of ancient wine-bibbers and wassailers, still unrepentant, trying to sing a catch in their Stygian (22) lake — if the Walden nymphs will pardon the comparison, for though there are almost no weeds, there are frogs there — who would fain keep up the hilarious rules of their old festal tables, though their voices have waxed hoarse and solemnly grave, mocking at mirth, and the wine has lost its flavor, and become only liquor to distend their paunches, and sweet intoxication never comes to drown the memory of the past, but mere saturation and waterloggedness and distention. The most aldermanic, with his chin upon a heart-leaf, which serves for a napkin to his drooling chaps, under this northern shore quaffs a deep draught of the once scorned water, and passes round the cup with the ejaculation tr-r-r-oonk, tr-r-r — oonk, tr-r-r-oonk and straightway comes over the water from some distant cove the same password repeated, where the next in seniority and girth has gulped down to his mark; and when this observance has made the circuit of the shores, then ejaculates the master of ceremonies, with satisfaction, tr-r-r-oonk and each in his turn repeats the same down to the least distended, leakiest, and flabbiest paunched, that there be no mistake; and then the howl goes round again and again, until the sun disperses the morning mist, and only the patriarch is not under the pond, but vainly bellowing troonk from time to time, and pausing for a reply.