Ovenbird    Seiurus aurocapillus

Migratory Status: Neotropical migrant

PIF Population Estimate: 24 000 000

Percent of western hemisphere population breeding in boreal forest: >25%

BAM Effective Detection Radius (m) : 83.6

PIF Maximum Detection Distance (m) : 200

Canadian BBS Population trend: -0.2 n.s. (-0.6 to 0.2)

Life History

Though not regarded as a species of high conservation concern in Canada, the Ovenbird has been one of the most studied North American songbirds in recent decades. More recently, the species has become a popular subject in studies assessing the effects of forest fragmentation and other disturbances on demography and rates of pairing success.

Adults of both sexes of the Ovenbird are similar in appearance, with an olive back, large white eye ring, orange central crown stripe, and dark chestnut spotting on a white breast. It is often mistaken for a thrush (Catharus spp.) because of its relatively large size, stout bill, sturdy legs, and large dark eyes. Unlike many other North American wood warblers, the Ovenbird changes very little in appearance during its spring and autumn moults.

The breeding range of the Ovenbird extends over most of the southern boreal forest, from Newfoundland to northeast British Columbia and the southern Mackenzie District. Outside of the boreal region, the Ovenbird breeds throughout the broadleaf forests of the eastern United States and discontinuously in many parts of the mid-west. In winter, the Ovenbird occurs irregularly in coastal areas of the southeastern United States and is a regular winter resident in southern Florida. The winter range extends throughout the Caribbean, occasionally as far south as Trinidad and Tobago. The species also winters throughout southern Mexico and Central America.

The Ovenbird utilizes a wide range of habitat types across its range, though generally tends to prefer mature deciduous-dominated or mixed stands. They seem to prefer canopy heights between 16 and 22 m and with 60 to 90% canopy closure. Numerous studies suggest the species may also be area sensitive, preferring contiguous forest stands of more than 100 ha in size.

Although the Ovenbird is a somewhat shy and retiring species, its song is far from subtle. The highly distinctive song consists of a series of three repeated phrases, often paraphrased as “teacher, teacher, teacher”. Although distinct, songs can be highly variable between individuals in speed, pitch, and emphasis of syllables. Ovenbirds forage in the leaf-litter of the forest floor and are highly opportunistic, consuming a wide range of larval and adult insects. At the peak of the breeding season, they often rely heavily on abundant lepidopteran ( i.e., butterfly and moth) larvae, especially when feeding young in the nest.

Reference(s)

Van Horn, M. A., and T. Donovan. 1994. Ovenbird (Seiurus aurocapilla), The Birds of North America, No. 88. A. Poole and F. Gill, eds. The Academy of Natural Sciences, Philadelphia, PA, and The American Ornithologists's Union, Washington, D.C.