Troglodytes aedon
(House Wren)


Order: Passeriformes
Order Description: Passerines
Family: Troglodytidae
Family Description: Wrens

Physical Description:
4 1/2-5" (11-13 cm). Gray with browner tail, throat, and flanksClick word for definition. Finely barred with black on tail, wings, and belly. Indistinct, buffClick word for definition eyeline above dark eye. Long, slightly curved bill.

Similar Species- Winter Wren

Song:
A rapid, bubbling trill that rises and falls.

Distribution:
Breeds from southern British Columbia, east across southern Canada to New Brunswick, and south to northern Baja California, Texas, and northern Georgia. Also breeds in Mexico and Central and South America. Winters in southern U.S., south to southern Mexico.

Habitat:
Found in thickets, shrubbery, brushy areas, partly-open situations, open woodlands, deciduousClick word for definition forests, farmlands, chaparralClick word for definition, and around human habitation.

Diet:
Feeds almost entirely on insects, but may also eat other small invertebrates.

Ecology:
Nests in excavated cavity, preferably in standing snag or hollow tree. Will also use nest box. In Arizona study, breeding density was 10-18 pairs/40 ha in northern pine forest. Forages on ground, or takes food from vegetation. Sleeps in all seasons in crannies in buildings, holes in trees, nichesClick word for definition in banks, or in similar sites. Sometimes destroys clutches of other birds, including conspecifics. Species is one of 7 neotropical migrants thought to be declining in Idaho.

Reproduction:
Female incubatesClick word for definition 5-9 eggs (commonly 6-8), for 12-15 days, and may produce 2-3 broodsClick word for definition/yr. Young are tended by both parents, and leave nest at 12-18 days; male may feed fledged young while female renests.

Conservation:
Element Code: ABPBG09010
Status: Protected nongame species
Global Rank: G5
State Rank: S4,NTMB
National Rank: N5B,N5N

Important State References:
Saab, V. and C.R. Groves. 1992. Idaho's migratory landbirds: description, habitats, and conservation. Nongame Wildlife Leaflet #10, Idaho Dept. Fish & Game, Boise. 16pp.


Photo by Marcus Martin, ©1999.
Design by Ean Harker©1999, 2000.
Written by Jason Karl, 2000.