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Kirtland's Warbler

Setophaga kirtlandii ORDER: PASSERIFORMES FAMILY: PARULIDAE

IUCN Conservation Status: Near Threatened

A rare bird of the Michigan jack pine forests, the Kirtland's Warbler is dependant upon fire to provide the small trees and open areas that meet its rigid habitat requirements for nesting.

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At a GlanceHelp

Measurements
Both Sexes
Length
5.5–5.9 in
14–15 cm
Weight
0.5 oz
14 g
Other Names
  • Paruline de Kirtland (French)

Cool Facts

  • The Kirtland's Warbler requires areas with small jack pines for nesting. The jack pine requires fire to open its cones and spread its seeds. The warbler first appears in an area about six years after a fire when the new growth is dense and is about 1.5 to 2.0 meters (5.0-6.5 feet) high. After about 15 years, when the trees are 3.0 to 5.0 meters (10.0 to 16.5 feet) high, the warbler leaves the area.
  • The female Kirtland's Warbler is more selective than the male in her choice of habitat, and the best areas attract more females than males. The last residents of a tract that is getting too old are always unmated males.

Habitat


Open Woodland

Breeds in scrubby jack pine. Winters in low scrub, thickets, and (rarely) deciduous woodland.

Food


Insects

Insects and small fruits.

Nesting

Nesting Facts
Clutch Size
3–6 eggs
Egg Description
White or buff, with varying amounts of fine brown spots concentrated around large end.
Condition at Hatching
Helpless.
Nest Description

Open cup of grass, sedges, pine needles, and pieces of leaves, lined with rootlets, plant fibers, and hair. Placed in depression in ground, often with overhanging tuft of grass.

Nest Placement

Ground

Behavior


Foliage Gleaner

Forages on ground and in midlevels of small trees, gleaning insects.

Conservation

status via IUCN

Near Threatened

Endangered species. Fire suppression led to decline in suitable habitat for nesting. Nest parasitism by Brown-headed Cowbird caused further decline in species. Extensive measures currently taken to provide adequate nesting habitat and to control cowbird numbers.

Credits

  • Mayfield, Harold F. 1992. Kirtland's Warbler (Dendroica kirtlandii). In The Birds of North America, No. 19 (A. Poole, P. Stettenheim, and F. Gill, Eds.). Philadelphia: The Academy of Natural Sciences; Washington, DC: The American Ornithologists' Union.

Range Map Help

Kirtland
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