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Pacific Wren


IUCN Conservation Status: Least Concern

Pacific Wrens creep along the forest floor and sing loudly from perches. One of the only North American wrens associated with old-growth forest, there is some evidence that they are being harmed by forest fragmentation. Pacific Wrens used to be considered the same species as Winter Wrens, but after studies showed they do not interbreed, they were split into separate species in 2010.

At a GlanceHelp

Both Sexes
3.1–4.7 in
8–12 cm
4.7–6.3 in
12–16 cm
0.3–0.4 oz
8–12 g

Cool Facts

  • Pacific Wrens sometimes roost communally in cold weather. In one case, 31 individuals were found together in a nest box in western Washington.



Coniferous and mixed forests, primarily with dense understory, often near water.



Invertebrates, including insects, insect larvae, millipedes, spiders, and others.


Nesting Facts
Clutch Size
1–9 eggs
Egg Description
White, with variable reddish brown spotting.
Condition at Hatching
Helpless with little down.
Nest Description

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.

Nest Placement



Ground Forager

Feeds methodically in low shrubs, on the ground, near the bases of trees, and around fallen dead wood.


status via IUCN

Least Concern

Pacific Wren populations declined in several Northwest areas, but overall, numbers remained stable between 1966 and 2014, according to the North American Breeding Bird Survey. Partners in Flight estimates a global breeding population of 6 million with 73% spending part of the year in the U.S., and 41% in Canada. The species rates a 9 out of 20 on the Continental Concern Score, and is a U.S.-Canada Stewardship Species. Pacific Wren is not on the 2014 State of the Birds Watch List.


Range Map Help

Pacific Wren Range Map
View dynamic map of eBird sightings

You Might Also Like

Winter Wren Wraparound. Story in Living Bird Magazine.

eBird Occurrence Maps, Pacific/Winter Wren



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