Everything below is reproduced verbatim from three public-domain sources — USDA Farmers’ Bulletin 630 in its 1915 and 1926 editions, the Forest Service’s 1977 Cavity-Nesting Birds of North American Forests, and Chester Reed’s 1906 Bird Guide — so you can watch the government’s own verdict on the house wren harden over eleven years.

ON SALE - SAVE $59

The Camera Feeder We Use In Our Own Backyard

See Today's Price

We earn a commission if you make a purchase, at no additional cost to you. 9/11/2026 10:00 am GMT ⓘ

The pugnacious tenant, as the bulletin saw him

From the 1915 edition. — The diminutive house wren frequents barns and gardens, and particularly old orchards in which the trees are partially decayed. He makes his nest in a hollow where perhaps a woodpecker had a domicile the year before, but he is a pugnacious character, and if he happens to fancy one of the boxes put up for bluebirds, he does not hesitate to take it. He is usually not slow to avail himself of boxes, gourds, tin cans, or empty jars placed for his accommodation.

In food habits the house wren is entirely beneficial. He may be said to live upon animal food alone, for an examination of 88 stomachs showed that 98 per cent of the contents was made up of insects or their allies, and only 2 per cent was vegetable food, including bits of grass and similar matter, evidently taken by accident with the insects.

Half of this food consisted of grasshoppers and beetles; the remainder of caterpillars, bugs, and spiders. As the wren is a prolific breeder, frequently rearing in a season from 12 to 16 young, a family of these birds must cause considerable reduction in the number of insects in a garden. Wrens are industrious foragers, searching every tree, shrub, and vine for caterpillars, and examining every post and rail of the fence and every cranny in the wall for insects or spiders.

Wrens are industrious foragers, searching every tree, shrub, and vine for caterpillars, and examining every post and rail of the fence and every cranny in the wall for insects or spiders.

One paragraph, two editions

1915: The house wren is only one of a numerous group of small birds of similar habits. There are within the limits of the United States 28 species and subspecies of wrens, occupying more or less completely the whole country from the Atlantic to the Pacific. With the exception of the marsh wrens, they all appear to prefer some cosy nook for a nesting site, and, as it happens, the farm buildings afford just the place desired.

This has led several of the wrens to seek out the habitations of man, and he is benefited by their destruction of noxious insects. No species of wren has been accused of harm, and their presence should be encouraged about every farm, ranch, village, or suburban residence.

1926: The house wren is only one of a numerous group of small birds of similar habits. There are within the limits of the United States 28 species and subspecies of wrens, occupying more or less completely the whole country from the Atlantic to the Pacific. With the exception of the marsh wrens, they all appear to prefer some cosy nook for a nesting site, and, as it happens, the farm buildings afford just the place desired.

This has led several of the wrens to seek out the habitations of man, and he is benefited by their destruction of noxious insects. Wrens have rarely been accused of harm, and their presence should be encouraged except when undue interference with the nests of other birds is noted.

The 1977 handbook: aggressive by the book

House wren. — Habitat: House wrens are common nesters in shrubbery and brush throughout the northern two-thirds of the United States, but they winter in the southern states. They range from the plains to timberline throughout the Rocky Mountains. They are commonly found along the edges of woods, swamps, fields, and in orchards.

Nest: House wrens are aggressive in their nesting habits and will drive other birds from cavities. Nests have been found in a variety of sites including 2-inch pipes used to brace fence posts, nesting boxes, natural cavities, and downy woodpecker holes (Sutton 1930). Nests are usually less than 10 feet above the ground. Diameter of the entrance hole in nesting boxes should be 1 inch.

Food: House wrens are capable of eating large quantities of insects and arthropods, which constitute 98 percent of their diet. Animal items include beetles, caterpillars, bugs, grasshoppers, and ants (Bent 1948).

Brown-throated wren. — Habitat: Brown-throated wrens inhabit oak forests, mostly in desert ranges, but can be found up to elevations of 8,000 feet in southern Arizona.

Nest: This wren uses natural cavities or old woodpecker holes in tree trunks or limbs. Like the house wren, it will sometimes occupy recesses about buildings and nest boxes (Pough 1957).

Food: We could not find published information on food habits but the diet is probably insects similar to that of other wrens.

Winter wren. — Habitat: Winter wrens inhabit coniferous forests of spruce, fir, and pine, and underbrush in woodlands in eastern and western United States and Canada.

Nest: Winter wren nests, made from twigs and leaves, are built near the ground in exposed roots or fallen logs or in rocks and crevices (Bent 1948, Wetmore 1964).

Food: Details on food items were not found in the literature, but the diet is probably adult and larval stages of insects (Bent 1948).

Bewick’s wren. — Habitat: Bewick’s wrens are common and widespread in the West, but uncommon and local in the Appalachians and Ozarks. They are usually found in farmyards, brushlands, fencerows, and suburban areas. Bewick’s wrens are fairly common in the pinyon-juniper forest type, and in mesquite-willow-cottonwood associations along southwestern streams.

Nest: Nests of the Bewick’s wren can be found in a multitude of places. Most nests are cup-shaped and can be either open or closed above. They are usually located in cavities close to the ground (Miller 1941). Nest sites include natural cavities, woodpecker holes, knotholes in fallen trees, fence posts, tin cans, bird boxes, and deserted automobiles (Bent 1948).

Food: Bewick’s wrens, like other wrens, eat large numbers of insects that are injurious to vegetation. Ninety-seven percent of the diet is insects, including primarily hemiptera and coleoptera. In the South they are credited with eating boll weevils (Bent 1948).

Carolina wren. — Habitat: Carolina wrens are common in forest types with thick underbrush throughout the eastern United States. The number in northern populations fluctuates widely depending on the harshness of winter conditions.

Nest: Carolina wrens are quite universal in their choice of nesting sites. These wrens prefer nesting sites that are fairly well enclosed, but they are not totally dependent upon cavities. They are well adapted to habitat conditions provided by man, but also nest in the woods where they prefer tangles and brushy undergrowth. Nests have been found in natural cavities, mailboxes, newspaper cylinders, old hornet nests, and bird houses (Laskey 1948, Nice and Thomas 1948).

Food: Animal food, mostly insects, makes up 93 percent of the Carolina wren’s diet. Of this, beetles, caterpillars, and moths comprise the largest portion. The 7 percent vegetable material is mostly seeds taken in the winter. Since the Carolina wren feeds mostly on or near the ground, deep snow is detrimental to survival. They will visit feeding stations if placed near brush piles (Bent 1948).

House wrens are aggressive in their nesting habits and will drive other birds from cavities.

Reed’s 1906 field guide: the wrens, entry by entry

Carolina wren. — Above rusty brown and below washed with the same, the throat and line over the eye being white.

Like all the Wrens, this one commonly sits or flits about in the brush, with the tail erect over the body; only when singing it is held downward. Their flight is usually only for a short distance, accomplished by rapid wing beats and with a jerking motion of the tail.

Song.—Loud and tinkling, and utterly impossible to describe.

Nest.—In brush heaps, holes in trees, bird boxes or bushes; made of weeds, grass and any trash that they may pick up; eggs, five to seven in number, white, specked with reddish brown (.74 × .60).

Range.—Eastern U. S., breeding from the Gulf north to Connecticut and Illinois; resident. 718a. Florida Wren (miamensis) is found in southern Florida. 718b. Lomita Wren (lomitensis), found in southern Texas.

Bewick wren. — Above dark brown; below and line over eye whitish; tail blackish with the outer feathers barred with white.

Like all the Wrens, these seem to be very restless and are continually creeping about in brush heaps or along stone walls, fences or over fallen trees or stumps. They are locally abundant in interior United States, in some sections entirely replacing the House Wren.

Song.—A sweet chant of liquid melodious notes.

Nest.—In any location that happens to take the bird’s fancy, such as holes in trees, bird boxes, in barns, sheds, etc.; made of straw, grass and trash; eggs white profusely specked with reddish brown.

Range.—Mississippi Valley and the Plains north to South Dakota; east to the Alleghanies and casually to the South Atlantic States. 719c. Texas Bewick Wren (crythus) is found from Texas north to Indian Territory.

House wren. — Above brownish with tail and wings barred; below dull grayish, barred on the flanks with brown.

These are bold, sociable and confiding birds, seeming to prefer men’s society, building their nests in bird boxes that are erected for them, or in the most unexpected situations about buildings. They are one of the most beneficial birds that can be attracted to one’s yard, feeding wholly upon insects.

Song.—Loud, clear and bubbling over with enthusiasm.

Nest.—Of grass or weeds, stuffed into any crevice that takes their fancy, frequently in bird boxes and holes in orchard trees; eggs white, so minutely and thickly dotted with pinkish brown as to nearly conceal the ground color (.64 × .52).

Range.—Eastern N. A., breeding north to Maine and Manitoba; winters along the Gulf coast. 721b. Western House Wren (aztecus) is found from the Plains to the Pacific Coast ranges.

Winter wren. — Above bright cinnamon, below paler; sides, wings and tail heavily barred with black.

This is the shortest and most stoutly built Wren that we have. They look very pert with their little stubby tail erect over their back. In most of the United States we only see them in the winter, and they are associated, in my mind, with brush heaps in woods and gardens. They will hide in a small pile of brush, running from side to side, so that it is almost impossible to make them leave it.

Song.—A rippling flow of melody, not as loud, but more musical than that of the House Wren.

Nest.—In brush heaps, tin cans, hollow stumps or crevices in unoccupied buildings; made of piles of grass, weeds, etc., lined with feathers; eggs white, sparingly specked with reddish brown (.65 × .50).

Range.—Eastern N. A., breeding from the northern edge of the U. S. northward; winters from its breeding range to the Gulf.

Short-billed marsh wren. — This species can readily be distinguished from the next, as the whole crown is streaked with black and white, whereas that of the Long-bill is uniformly colored. Both species are marsh birds, at home among the reeds, to which they attach their globular woven nests, with the little entrance in the side. The eggs of this species are pure white. It is found in eastern N. A. from the Gulf to southern Canada.

Long-billed marsh wren. — The bill of this species is .5 inch or more in length; that of the last is .4 inch or less. This species is by far the most abundant. Its eggs are so profusely dotted with dark brown as to appear a chocolate color. Breeds from the Gulf to Massachusetts and Manitoba.

Source

Some Common Birds Useful to the Farmer, USDA Farmers’ Bulletin 630, 1915 edition and 1926 revision, ‘The Wrens.’ Project Gutenberg #62696 and #62678. Cavity-Nesting Birds of North American Forests, USDA Agriculture Handbook 511 (1977), wren species accounts. Project Gutenberg #49172. Chester A. Reed, Bird Guide: Land Birds East of the Rockies (1906), wren entries. Project Gutenberg #45630. Public domain. Project Gutenberg #62696, #62678, #49172, #45630.

Passages reproduced verbatim from the editions named above. Mechanical edits only: footnote markers (e.g. [12], [13]) and figure references (e.g. ‘(fig. 4)’) removed; illustration placeholders and species-header lines dropped; hard line-wraps joined; one 1926 OCR fix, ‘take it He is’ → ‘take it. He is’ (dropped period restored). Where the two bulletin editions are identical the 1915 text is quoted; the closing verdicts differ and both are shown. Both tables restate figures and sentences that appear in the reproduced text.