John Burroughs opens this collection by declaring that birds are essentially creatures of poets, because only the poetic temperament fully responds to them. He immediately links ornithology to poetry, calling Audubon a poet in deed if not in word, and Wilson a man who took fire as only a poet can. The preface explains that Burroughs aims to bring his outdoor spirit indoors, treating literary subjects with the same naturalist's eye he turns on the fields and woods. The result is a book that moves from bird song to Walt Whitman without changing register, insisting that the lessons of earth and air apply to higher matters.

Birds as Poetic Kindling

Burroughs argues that the great ornithologists have been poets in temperament, if not always in verse. He cites Audubon's eye, ear, and heart, and Wilson's enthusiasm kindled by a red-headed woodpecker—a bird that shows like a tricolored scarf among the foliage. The author does not merely catalog species; he treats each bird as a spark for the imagination. The opening ballad of Robin Hood, with its wood-wele singing on the spray, sets a medieval, lyrical tone. Burroughs insists that the bird's song is a natural poem, and the poet's work is to respond with equal intensity. This section establishes the book's central method: reading nature as literature and literature as a form of natural history.

The Cow That Learned the Latch

In a long, comic anecdote, Burroughs describes a muley cow that repeatedly opened his garden gate. He watches her lift the latch with her nose, then nudge the gate when it does not move, then butt it harder until it rattles. The cow knows she is trespassing and flees when caught. Burroughs owns three cows but loves only one: Chloe, a Devonshire cow that arrived by steamer. He contrasts his happy evenings inside a sagging back gate—where he takes an earth bath twice a day—with his miserable mornings at a government mahogany desk. The passage is precise about bovine behavior and rich in self-deprecating humor, showing Burroughs's skill at turning a farmyard incident into a meditation on the artificiality of city life.

Emerson and the Two Gardens

Burroughs quotes Emerson's remark that a scholar had better not try to have two gardens, but he disagrees. He finds that hoeing up dock and red-root and twitch-grass restores his normal tone and freshness, impaired by government work. The earth draws out social distempers; blue devils take flight if you mean to bury them. This section weaves literary reference into personal experience, treating Emerson as a conversational partner rather than an authority. Burroughs's prose is concrete: he names the weeds, describes the fence, and measures his happiness by the creak of the gate. The essay becomes a defense of manual labor as a cure for the weariness of an artificial life, a theme that recurs throughout the collection.

Whitman as Poetic Pulse

Burroughs warns the reader not to be scared away by the name Walt Whitman, whom he calls the strongest poetic pulse that has yet beaten in America. He frames the literary chapters as a proper supplement to his nature sketches, following out the lessons of the earth and air into higher matters. The path is not an artificially graded path strewn with roses but a rugged trail through the woods or along the beach, where one gets a whiff of natural air. Burroughs's defense of Whitman is grounded in the same observational method he applies to birds: he looks for the authentic, the wild, the unpolished. The essay does not summarize Whitman's work but argues for his place in a tradition that values the fluid and attaching character of the true bard.

Burroughs writes as a naturalist who reads poetry and a poet who watches cows. His sentences are long and winding, full of specific plants, animals, and gestures. Readers will find the most pleasure in the details: the red-headed woodpecker like a tricolored scarf, the cow peeping at cabbages through a knothole, the blue devils buried in compost. The book rewards those who read slowly, letting the observations accumulate into a portrait of a mind that finds the extraordinary in the ordinary.