- 3.1–4.7 in
- 4.7–6.3 in
- 0.3–0.4 oz
- Wren (British)
- Troglodyte mignon (French)
- Chivirín chochín (Spanish)
- Per unit weight, the Winter Wren delivers its song with 10 times more power than a crowing rooster.
- The Winter Wren sometimes builds several nests in a single breeding season. Nests are used for roosting or for repeated breeding attempts.
- Where the ranges of the Pacific Wren and Winter Wren come together, in British Columbia, the two almost identical species sing different songs. The males battle each other, but the females seem to only choose mates that sing "their" song—keeping interbreeding to a minimum. Read more details in Living Bird magazine.
- The oldest recorded Winter Wren was a female and at least 6 years, 6 months old, when she was recaptured and rereleased during banding operations in California.
Breeds in many different habitat types, from cliff faces to riparian areas to various forests; occurs in greatest densities in coniferous forests. Prefers areas with fallen logs and other dead wood.
Invertebrates, including insects, insect larvae, millipedes, spiders, and others.
- Clutch Size
- 1–9 eggs
- Egg Description
- White, with variable reddish brown spotting.
- Condition at Hatching
- Helpless with little down.
Domed structure with entrance hole on side, made of moss, bark, twigs, rootlets, grass, feathers, hair, and decayed wood, lined with feathers and hair. Placed in hole. May use existing cavities, such as woodpecker holes, excavate holes in banks, or build nests on root bases and branches.
Feeds methodically in low shrubs, on the ground, near the bases of trees, and around fallen dead wood.
Winter Wren populations have generally been stable, and possibly experienced a small increase between 1966 and 2014, according to the North American Breeding Bird Survey. Partners in Flight estimates a global breeding population of 11 million with 99% spending part of the time in the U.S., and 91% in Canada. This is a U.S.-Canada Stewardship species, and rates an 8 out of 20 on the Continental Concern Score. Winter Wren is not on the 2014 State of the Birds Watch List.
- Hejl, S. J., J. A. Holmes, and D. E. Kroodsma. 2002. Winter Wren (Troglodytes troglodytes). In The Birds of North America, No. 623 (A. Poole and F. Gill, eds.). The Birds of North America, Inc., Philadelphia, PA.
- North American Bird Conservation Initiative, U.S. Committee. 2014. State of the Birds 2014 Report. U.S. Department of Interior, Washington, DC.
- Partners in Flight. 2012. Species assessment database.
- USGS Patuxent Wildlife Research Center. 2015. Longevity records of North American Birds.
- USGS Patuxent Wildlife Research Center. 2014. North American Breeding Bird Survey 1966–2014 Analysis.