Most are short-distance migrants, but some migrate to the tropics. Adams, R.A.  2003. Much of its foraging is done on the ground, usually in dense cover, although sometimes it forages on open lawns and roads. 3.5 + 0.25 (population size) + 0.0 (geographic distribution) - 0.5 (short-term trend) - 0.75 (threats) = 2.5. Missoula, MT. (Click legend blocks to view individual ranges), Observations in Montana Natural Heritage Program Database. 2000. The song is somewhat ventriloquial. Missoula, MT: Wildlife Biology Program, University of Montana. McLaughlin, C.M. Immature birds are similar to adults except the head and neck are brown tinged with buff with an indistinct orange eyebrow. Young. Varied Thrushes are large, boldly-patterned birds of the Pacific Northwest. Both parents feed the young. Hart, M.M., W.A. Additionally, forest management practices that promote even-aged stands may leave large areas unsuitable for nesting (George 2000). 2004); Evaluating structural characteristics and distribution of each ecological system relative to the species' range and habitat requirements; Examining the observation records for each species in the state-wide point observation database associated with each ecological system; Calculating the percentage of observations associated with each ecological system relative to the percent of Montana covered by each ecological system to get a measure of "observations versus availability of habitat". R1-93-34. The varied thrush is a fairly large thrush species. Logging of mature and old-growth forests reduces the suitability of these habitats for nesting (Tobalske et al. The wings are boldly patterned with slate, black, and rust. CommentFire, timber harvest, and insect outbreak related to climate change are the greatest threats to the species due to its reliance on mature mesic conifer forests. The male Varied Thrush sings to defend his territory. 1302 p. Hutto, R.L. Most are small. Female is similar to male but duller overall with brown-olive to brown-gray upperparts, brown wing and tail feathers, and brown to slate-gray breast band. This species’ ethereal song is a distinctive aspect of wet northwestern forests. ScoreC - Not Intrinsically Vulnerable. Williams, P.C. The varied thrush’s song is a buzzy, high-pitched whistle on one pitch that is held for one or two seconds before a pause of three to 20 seconds. Neotropical migrant land birds in the Northern Rockies and Great Plains. Legs are long and orange; bill is straight and dark. Breeds in mature, wet forests in the Pacific Northwest; found in a broader range of wooded habitats with fruiting plants in winter. Varied Thrush is a popular song by John Neville | Create your own TikTok videos with the Varied Thrush song and explore 0 videos made by new and popular creators. ScoreF - 20,000-200,000 km squared (about 8,000-80,000 square miles). If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. Winter food items are similar but can include mast if available. 1998. Maxell, D.P. Loss of suitable breeding habitat due to forestry practices, insect outbreaks, and wildfires reduce breeding populations. SeverityModerate - Major reduction of species population or long-term degradation or reduction of habitat in Montana, requiring 50-100 years for recovery. Although it prefers dense, wet, old-growth forests, it can be found in a variety of forest types, including mixed forests. Varied Thrushes eat a combination of insects and berries, shifting seasonally. However their brains are relatively large and their learning abilities are greater than those of most other birds. Here's some links if you want to download a whole group. ScoreB - Narrow. In the male, the rust-colored belly and throat are interrupted by a black breast-band; the female has a lighter, grayish band. 289 p. Dobkin, D. S.  1992. CommentBreeding Bird Survey data has moderate credibility in Montana and shows an insignificant decline of -6.7% per year or 51% decline per decade. CommentSpecies favors mesic conifer forests which, in the Northern Rockies, have remained relatively stable within +/- 25% of pre European levels. The Varied Thrush is unmistakable with its black and orange plumage and ethereal song. Varied Thrushes are currently still common, but are vulnerable to loss of habitat due to the cutting of forests throughout their range. In winter, it may also be found on lawns and road edges. CommentNarrow specialist. The song is most often heard at dawn, dusk, and after a rain shower. Hendricks, C.R. They raise two broods in a season when possible. The female lays 3-4 eggs that she incubates. The breast and neck are a bright orange, separated by a black chevron at the throat. It repeats this pattern for 10 minutes or so from a high perch in a conifer, and then flies to a new perch and begins again. Nest is an open cup consisting of three layers: an outer layer of loosely woven twigs, leaves, and bark; a middle layer of rotten wood, moss, and mud; and an inner layer of fine grass, soft leaves, and fine mosses. 161 p. Werner, J.K., B.A. and J.S. 2012. Habitat relationships of landbirds in the Northern Region, USDA Forest Service, Rocky Mountain Research Station RMRS-GTR-32. 429 pp. Females show a similarly gorgeous, but duller pattern. By meeting these birds’ basic needs for food, water, shelter, and nesting sites, it is possible to attract thrushes and enjoy their amazing company all year round.