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Guide to North American Birds

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Adult. Photo: Nicole Beaulac/Flickr (CC BY-NC-ND 2.0)

Brown Creeper

Certhia americana

Looking like a piece of bark come to life, the Brown Creeper crawls up trunks of trees, ferreting out insect eggs and other morsels missed by more active birds. It is easily overlooked until its thin, reedy call gives it away. Reaching the top of one tree, it flutters down to the base of another to begin spiraling up again. Creepers even place their nests against tree trunks, tucked under loose slabs of bark, where they are very difficult to find.

Conservation status	Declined as a breeding bird in much of eastern United States with cutting of forests; nests mainly in mature forest, not young second growth. Still common locally in north and west.
Family	Creepers
Habitat	Woodlands, groves, shade trees. Breeds in mature forest, either coniferous or deciduous, with many large trees, ranging from mountain pine woods to lowland swamp forest. In migration, may be found in any habitat with at least a few good-sized trees, even suburbs or city parks.

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Feeding Behavior

Does almost all foraging on trunk and limbs of trees, climbing slowly with tail braced against surface, examining bark visually and probing in crevices. Occasionally forages on ground or snow.

Eggs

5-6, sometimes 4-8. Whitish, dotted with reddish brown. Incubation is by female, about 14-17 days. Male may feed female during incubation. Young: Both parents bring food for nestlings. Young leave nest about 13-16 days after hatching.

Young

Both parents bring food for nestlings. Young leave nest about 13-16 days after hatching.

Diet

Mostly insects. Feeds on a wide variety of insects, especially insect eggs and pupae hidden in bark; also weevils and other beetles, true bugs, leafhoppers, scale insects, aphids, caterpillars, ants, and many others. Also feeds on spiders and pseudoscorpions. Eats some seeds, and will feed on suet or peanut-butter mixtures.

Nesting

Male defends nesting territory by singing. In courtship, male may perform rapid twisting flight among trees; may pursue female in the air and around tree trunks. Nest: Usual nest site is behind a large strip of bark still attached to a tree; occasionally in cavity in tree. May be at any height from very low to 50' or more above ground. In typical sites, nest is a shallow half-cup, closely fitting the available space behind the bark slab. Nest (built by female, with male bringing some material) is made of twigs, bark strips, moss, leaves, lined with finer materials.

Illustration © David Allen Sibley.
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Text © Kenn Kaufman, adapted from
Lives of North American Birds

Migration

May migrate in small flocks. In many areas, migration peaks in April and in late September to early October.

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Migration

May migrate in small flocks. In many areas, migration peaks in April and in late September to early October.

All Seasons - Common
All Seasons - Uncommon
Breeding - Common
Breeding - Uncommon
Winter - Common
Winter - Uncommon
Migration - Common
Migration - Uncommon

Songs and Calls

A high-pitched, lisping tsee; song a tinkling, descending warble.

Audio © Lang Elliott, Bob McGuire, Kevin Colver, Martyn Stewart and others.
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How Climate Change Will Reshape the Range of the Brown Creeper

Audubon’s scientists have used 140 million bird observations and sophisticated climate models to project how climate change will affect this bird’s range in the future.

Zoom in to see how this species’s current range will shift, expand, and contract under increased global temperatures.

Climate Threats Near You

Climate threats facing the Brown Creeper

Choose a temperature scenario below to see which threats will affect this species as warming increases. The same climate change-driven threats that put birds at risk will affect other wildlife and people, too.