The habitats were Historically, the streaked horned lark’s breeding range extended from southern British Columbia south through the Puget lowlands and outer coast of Washington and the Willamette Valley and Rogue River Valley of Oregon. Projects | Author links open overlay panel James R. Hatten a Gary L. Slater b Jerrmaine L. Treadwell b Matthew R. Stevenson c. The streaked horned lark has a dark brown back, yellowish underparts, a walnut brown nape and yellow eyebrow stripe and throat. The streaked horned lark is endemic to the Pacific Northwest, and is a subspecies of the wide-ranging horned lark. This subspecies is conspicuously more yellow beneath and darker on the back than alm… Horned larks are small, ground-dwelling birds, approximately 16−20 centimeters (6−8 inches) in length. Habitats used during non-breeding months and migratory rest-stops were not mapped. Translated from the Washington Gap Analysis Bird Volume by Uchenna Bright (Data about data or how the map was made). The streaked horned lark (hereafter “lark”; Eremophila alpestris strigata) is a federally listed bird subspecies of the Pacific Northwest that occupies open landscapes with short vegetation and abundant bare ground. They may rear two to three broods per season. The green area shows the predicted habitats for breeding only. Along the coast of Oregon, the streaked horned lark was considered scarce. Share sensitive information only on official, secure websites. Recent Streaked Horned Lark research has focused on documenting changes in the subspecies breeding range (Rogers 2000), inventorying Furthermore, the Streaked Horned Lark [s low egg hatching rate of 44% suggests that inbreeding depression may be playing a role in the decline of Larks at 13th Division Prairie. United States. In addition, we created a novel seral-stage predictor variable to identify young, mature, old, and unsuitable locations; critical information for lark conservation planning and dredge-disposal operational planning. Streaked Horned Larks have large area requirements. Furthermore, they provide a foundation for application in other human-modified habitats across the species’ range. Streaked Horned Larks had significantly lower values in all measures of reproductive success when compared to both the guild and Savannah Sparrows. Biodiversity Modules | identified using 1991 satellite imagery, It is a small, brown, yellow, and white bird with a distinctive black facial mask and black headband, … We built candidate predictive models of lark breeding habitat after combining survey data (years 2016 and 2017), predictor variables, and logistic regression. Streaked horned larks forage on the ground in bare fields among short vegetation. E.a.merrilli: Core zones were steppe zones, the Oak zone, and the Ponderosa Pine zone locally in the notheast and within the Columbia Basin. A spatial model of streaked horned lark breeding habitat in the Columbia River, USA. We challenged probability models the year they were constructed (2016) and the following year (2017) with set-aside survey data. E.a. Maps | Resources, Legend: Nesting failure due to agricultural practices (e.g., mowing, haying, spraying) and predation at nest sites contributes to low reproductive success. The Streaked Horned Lark (Eremophila alpestris strigata) is a rare subspecies of the Horned Lark that breeds and winters in Oregon and Washington. Streaked Horned Lark Distribution Historical Range: • British Columbia, Canada • Northern Puget trough • San Juan Islands • Puget lowlands • WA coast and Columbia River Islands • Oregon Coast • Willamette Valley • Rogue and Umpqua Valleys Current Range: • Puget lowlands • … Breeding Bird Atlas (BBA), other datasets and experts throughout the state, as part of the Washington Gap Analysis Steppe and Oak zones were all good habitats except mid-to-high-density development, and in the Ponderosa Pine zone were agriculture, meadows and clearings. The streaked horned lark (hereafter “lark”; Eremophila alpestris strigata) is a federally listed bird subspecies of the Pacific Northwest that occupies open landscapes with short vegetation and abundant bare ground. It is listed as threatened under the federal Endangered Species Act and by the State of Washington. = Marginal Habitat. Metadata LockA locked padlock Model results will facilitate conservation planning decisions by informing real-time management decisions. The U.S. FWS's Threatened & Endangered Species System track information about listed species in the United States Verification accuracy ranged from 75 to 83% depending on the model tested and year. The best model contained terrain ruggedness, deposition age, vegetation greenness (e.g., lushness and density of vegetation) inside a 10-m cell, and heterogeneity in greenness within a 100-m radius. The streaked horned lark1 is a rare subspecies of the wide-ranging horned lark. Horned Lark strigata subspecies (Eremophila alpestris strigata), more commonly known as Streaked Horned Lark, is the rarest subspecies of Horned Lark in Canada. Legend: = Core Habitat = Marginal Habitat. A lock ( Importantly, the seral-stage variable allowed us to quantify and locate early, optimal, and late habitats. News | Across its breeding range, which has contracted dramatically, the lark relies primarily on human-modified habitats maintained in early successional states (e.g., agricultural fields, airfields, deposition islands). Project. Loss and degradation of grassland habitat are key limiting factors. Horned Lark distribution map. To help achieve their goal, we created a geospatial tool capable of quantifying and tracking habitat suitability for larks throughout the project area with satellite imagery. Explore recent publications by USGS authors, Browse all of Pubs Warehouse by publication type and year, Descriptions of US Geological Survey Report Series,, A spatial model of streaked horned lark breeding habitat in the Columbia River, USA. Home |

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