Guide to North American Birds

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

Vesper Sparrow

Pooecetes gramineus

A rather chunky sparrow of the open fields, known at all seasons by its streaked appearance and its white outer tail feathers. In summer, its clear musical song may be heard at any time of day; but the naturalist John Burroughs, feeling that it sang most impressively in the evening, gave it the name of Vesper Sparrow. Not as shy as many grassland sparrows, it can be observed rather easily. It is often found dust-bathing in bare soil of fields or dirt roads.

Conservation status	Has declined seriously in numbers in some parts of the East, probably owing to loss of habitat. In the West, still widespread and common.
Family	New World Sparrows
Habitat	Meadows, fields, prairies, roadsides. At all seasons, favors open grassy or weedy fields, often in rather dry situations with much open soil. May be in weedy roadsides, gravel pits, high mountain grasslands, stubble fields, grassy areas just above sandy beaches. Often breeds where there are a few taller plants for use as song perches.

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Feeding Behavior

Forages mostly or entirely on the ground, often on bare soil between grass or weed clumps. Except during nesting season, often forages in small, loose flocks.

Eggs

3-4, sometimes 2-6. Whitish to pale greenish white, blotched with brown and gray. Incubation is mostly by female, about 11-13 days. When disturbed at the nest, the female may flutter away as if injured, perhaps to lure intruders away. Young: Both parents feed the nestlings. Young leave the nest 1-2 weeks after hatching, usually around 9-10 days. 1-2 broods per year, sometimes 3.

Young

Both parents feed the nestlings. Young leave the nest 1-2 weeks after hatching, usually around 9-10 days. 1-2 broods per year, sometimes 3.

Diet

Mostly insects and seeds. Feeds on many insects, especially in summer, including beetles, grasshoppers, caterpillars, moths, true bugs, and many others, also spiders and other invertebrates. Also eats many seeds, especially in winter, mainly those of weeds and grasses.

Nesting

Male defends nesting territory by singing from a prominent raised perch. Courtship may involve male running about on ground near female, with his wings and tail spread, sometimes fluttering into the air. Nest site is on the ground, often in a slight depression and placed at the base of a grass clump, weed, or shrub. Nest is a bulky open cup made of grass and weeds, lined with fine grass, rootlets, animal hair.

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

Migration

Migrates relatively early in spring and late in fall, with peak migration in many areas during April and October.

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Migration

Migrates relatively early in spring and late in fall, with peak migration in many areas during April and October.

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

Songs and Calls

Song a slow series of 4 clear musical notes, the last 2 higher, ending in a descending series of trills-sometimes rendered as come-come-where-where-all-together-down-the-hill.

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

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 Vesper Sparrow

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.