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 Prairie
Warbler
The Prairie Warbler pumps its tail more consistently than
any other warbler species besides the waterthrushes and
the Palm Warbler. Although Prairie Warblers pump their
tails less emphatically than Palm Warblers, with longer
intervals between up and down motions, this habit is a
useful aid in identification.
Prairie Warblers appear to be inaptly named, as they
occur mainly in successional and other shrubby habitats,
rather than the prairies of the Great Plains. They were
perhaps named for the savanna-like open grassy woodland
of the South, locally called prairies. The Prairie
Warbler is one of the species that benefited from human
changes to the landscape. Prior to European colonization
they were rare or absent from much of their current
range, but moved into favorable habitats created by the
clearing of forests, and later by the abandonment of
agricultural areas. Typical Prairie Warbler breeding
habitat includes brushy second growth and abandoned old
fields, Christmas tree plantations, overgrown apple
orchards, powerline corridors, and burned areas. Prairie
Warblers use earlier successional stages than other
warbler species. They use cleared or burned habitats
after about five years, and occupy these habitats for 10
to 20 years.
Stable naturally occurring habitats favored by Prairie
Warblers include shrubby vegetation in sand dunes found
along the Atlantic Coast and parts of the Great Lakes,
forest-grassland transition, oak and pine barrens,
ridgetops, and cliff edges. They avoid closed canopy
forests, although a population does occur in the
understory of the hardwood forests of the Great Dismal
Swamp in Virginia. A separate small and declining
population occurs in the mangroves of southern Florida.
This subspecies averages grayer above and paler below
than the typical northern Prairie Warbler, but is not
generally separable in the field. It is non-migratory,
unlike the subspecies that occurs elsewhere.
The nominate subspecies occurs throughout the
southeastern United States, from eastern Texas and
Oklahoma east to the Atlantic Coast and from the Gulf
Coast as far north as southern New England, and locally
to the Great Lakes area. Prairie Warblers abandon this
breeding range as the population migrates to winter in
the Caribbean, especially in the Bahamas and West Indies.
Some winter in the southern half of Florida with the
resident population.
Prairie Warbler
Range Map
Males start singing as early as March when they begin
their northward migration. Prairie Warbler songs are
distinctive, consisting of a two-second series of thin,
high notes beginning on one pitch, then rising in tone.
Males are sometimes polygamous. Females construct nests
of small leaves, grass, fern and seed down, bound with
spider web, usually within ten feet of the ground. The
female incubates the four or five eggs on her own,
although the male helps feed the hatchlings. Prairie
Warblers are subject to heavy cowbird parasitism, and
sometimes renest several times in a season.
Description: Prairie Warblers are
smallish long-tailed warblers with a distinctive facial
pattern in all plumages. They are the only warblers with
bright yellow underparts and face with a dark malar
stripe along the lower border of the cheek separating the
yellow throat from a yellow crescent under the eye. They
have a yellow supercilium, dark eyeline, and dark streaks
along the flanks. The yellow underparts are somewhat
paler at the undertail coverts. The crown and upperparts
are olive green, with chestnut spotting on the back, and
two pale wingbars. Females and immatures are duller with
less distinct, but still visible facial markings.
Prairie Warblers are sometimes confused with Pine
Warblers (D. pinus), but Pine Warblers are
larger, less boldly marked, lack the prominent facial
markings and yellow crescent below the eye, and have
white undertail coverts. The Palm Warbler shares the
tail-wagging habit, has yellow supercilium and dark
eyelines, and may be quite yellow underneath, but with
darker upperparts and a rusty crown.
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