The Busy House Wren

A House wren searches on a lichen covered dead limb for insects.

August 27, 2020 – The little House wren is a busy, sometimes quite vocal, but mostly secretive bird that stays on the edges and in the shadows where the thick growth and shrubbery becomes a small bird sized labyrinth to hunt, hide, and guard against intruders. The wren has brownish toned plumage with subtle dark markings and grayish colored breast with slightly brown colored underparts. With such plain dull earthy colors the little bird can easily go unseen as it zips through the shadowy understory. There is not a dead tree or a broken limb that this little hunter doesn’t give a thorough search. From the ground up the bird checks every nook and cranny for small insects like spiders, crickets, and beetles as it moves in and out of the natural openings and dark crevices of the fallen bough. When the House wrens arrive in the spring the male searches for what he thinks is a perfect nest site. He may use old abandoned woodpecker holes, fractures in old dead trees, man made bird houses, or even old discarded and forgotten man made items. The male will make many trips bringing small twigs to the nest site angling longer twigs that are too wide for the hole, sideways to fit through the small opening. Filling the hole with nesting material, he tirelessly builds the nest in hopes of impressing a mate. The House wren has a large range which includes most of the Western Hemisphere. The birds nest in most of the northern two thirds of the United States, from coast to coast, and north into southern Canada. The wren spends the winters in the southern third of the United States south into Mexico. The little birds can be found year round in parts of Mexico, Central America, and south all the way to Tierra del Fuego in South America.

Somewhat hidden among the shadows, a small House wren searches the undersides of the leaves for prey

Those Wrens

A Carolina wren pauses for a moment on a branch near some feeding sparrows.

October 10, 2019 – The mostly drab and well camouflaged light brown House wren, or the glamorous Carolina wren with its’ rich reddish brown over pale brown tones with distinctive white eyebrows, makes those two wrens easy to recognize. The House wren and the Carolina wren are two of the five common wrens we find here in Northeastern Illinois. The House wren, like the Carolina wren, is a small bird with a big sound system. Their songs are most often noticed before the birds are ever located and sometimes those clear rich sounds are both baffling and uplifting to the observer when they witness such small birds with very large and impressive songs. The little House wrens build their nests in the holes and cavities of living and dead trees. They will use nesting boxes, holes in buildings, or abandoned machinery, if it provides just the right sized hole and offers protection from predators and other birds. Carolina wrens will use tree cavities, flower pots, tree stumps, overhangs, tin cans, or thick vegetation for nesting. The poet William Wordsworth’s poem “A Wren’s Nest” describes quite well, in his inspiring verse, the competence of the nesting wren and their choice of the perfect nest location. The Carolina wren prefers thick bushy overgrown areas of habitat. The House wren also likes similar habitat as the Carolina wren but is just as happy in yards and on farms that offer places to nest and find food in and around farm buildings and brush piles. The House wren is a short to medium-distance migrant that spends the nesting season in the northern two thirds of the United States and into southern Canada. It winters in the warmer climate of the southern US and Mexico. The Carolina wren is a year-round resident in the eastern United States from the southern great lakes to the eastern seaboard, south to Florida, west to east Texas and south into Mexico.

A cautious House wren comes out of the thicket just long enough to survey the surroundings.