- 5.1–5.9 in
- 0.6–0.7 oz
- Bruant de Lincoln (French)
- Sabanero de Lincoln, Gorriòn de Lincoln (Spanish)
- The Lincoln's Sparrow shows less geographical variation in song than any other species in its genus, perhaps a result of high dispersal rates among juveniles.
- The oldest recorded Lincoln's Sparrow was a male, and at least 7 years, 11 months old when he was recaptured and released during banding operations in Colorado.
Breeds in bogs, wet meadows, and riparian thickets, mostly in northern and montane areas. Winters in brushy areas, thickets, hedgerows, understory of open woodlands, forest edges, clearings, and scrubby areas.
Throughout the breeding season, Lincoln’s Sparrows primarily eat arthropods including spiders and larvae and adult beetles, flies, butterflies, mayflies, and leafhoppers. During winter, their diet consists of small seeds and invertebrates. They occasionally visit feeders.
- Clutch Size
- 3–5 eggs
- Number of Broods
- 1-2 broods
- Egg Length
- 0.7–0.9 in
- Egg Width
- 0.5–0.6 in
- Incubation Period
- 10–13 days
- Nestling Period
- 10–11 days
- Egg Description
- Blue, green, pink, or white, variably spotted with brown.
- Condition at Hatching
- Weak, naked except for sparse dark-gray down.
Constructed solely by the female over 2–3 days, the nest is a cup of woven, dried sedges and grasses with a substantial inner lining of soft vegetation. When placed among a cluster of branches, the branches are not incorporated into the woven outer layer; the nest is instead sandwiched among the branches. If disturbed during nest construction, the female is quite likely to abandon her nest.
Nests are usually placed near the base of roughly 2-foot tall willow shrubs or mountain birches surrounded by sedge, almost always on slightly raised ground within the shrub cover, less often in elevated branches.
Lincoln’s Sparrows spend most of their time on the ground walking and hopping as they search for food. They tend to forage by themselves or in very small numbers. Pairs are usually monogamous and defend their nests by giving a series of alarm calls or engage is various displays to distract intruders.
Lincoln's Sparrow populations seem to be stable or increasing overall, despite a few regional declines, particularly in the eastern part of its range, according to the North American Breeding Bird Survey. Partners in Flight estimates a global breeding population of 70 million, with 48% spending some part of the year in the U.S., 86% in Canada, and 49% wintering in Mexico. The species rates a 9 out of 20 on the Continental Concern Score. Lincoln's Sparrow is a U.S.-Canada Stewardship species, and is not on the 2016 State of North America's Birds' Watch List. Lincoln's Sparrow appears to be vulnerable to livestock grazing or human disturbance in their subalpine wetland breeding habitat. Like virtually all migrant songbirds, Lincoln's Sparrows are vulnerable to collisions with structures such as TV towers and buildings. They have also shown sensitivity to herbicide application.