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Showing 1 to 11 of 11 for “"Meadowlarks"”.
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Is meadowlark habitat segregation within sympatry behaviorally mediated?
… Within sympatry, Eastern and Western Meadowlarks establish and maintain mutually exclusive, multi-use territories. However, the influence this aggressive behavior may have on ecological relationships between these species is not well understood. In the following investigation, I …
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Resource selection, movement patterns, and survival of post-fledging grassland birds in Missouri
… of dickcissels (Spiza americana) and eastern meadowlarks (Sturnella magna) in southwestern Missouri, from 2002 to 2004 using radio telemetry. Across species at the micro-scale, there was support for the predation hypothesis (both species) and the thermal refuge hypothesis (dickcissels only). …
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Nesting Success of Grassland Birds in Fragmented and Unfragmented Landscapes of North Central South Dakota
… to small. Nest success rates for western meadowlarks were highest in small patches surrounded by high percent grass. Daily nest survival rates for western meadowlarks, savannah sparrows and grasshopper sparrows were higher in landscapes with >50% grassland habitat. Management …
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Landscape Fragmentation and Grassland Patch Size Effects on Non-game Grassland Birds in Xeric Mixed-grass Prairies of Western South Dakota
… these were: grasshopper sparrows, western meadowlarks, brown-headed cowbirds, chestnut-collared longspurs, bobolinks and red-winged blackbirds. Grasshopper sparrows and western meadowlarks were observed in >99% of grassland patches. Avian community composition was affected by landscape …
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Behavioural, mensural, and ecological correlates of polygyny in the eastern meadowlark (Sturnella magna)
… and attributes of the territory of male Eastern Meadowlarks (Sturnella magna) in order to determine whether there was a correlation between any of the attributes investigated and the number of females attracted by a male. Seventeen males, nine of which were polygynous and eight monogamous, were …
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Habitat use, nest success, and management recommendations for grassland birds of the Canaan Valley National Wildlife Refuge, West Virginia
… (Passerculus sandwichensis ), and eastern meadowlarks (Sturnella magna). Overall bird abundance differed between mowed (x¯ = 0.61; SE = 0.09) and unmowed (x¯ = 0.32; SE = 0.06) treatments in pastures (P = 0.033). Grassland bird diversity differed between mowed plots of hayfields …
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Modeling Detection and Density Using Distance Sampling for Three Priority Grassland Bird Species in Texas - Northern Bobwhite (Colinus virginianus), Eastern Meadowlark (Sturnella magna), and Painted Bunting (Passerina ciris)
… density of Northern Bobwhite and Eastern Meadowlarks, shrubland positively influenced Northern Bobwhite and Painted Bunting, and cropland positively influenced Northern Bobwhite. Overall, there was high variability across the three species in the effect of the type of vegetative cover on …
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Habitat selection and breeding ecology of grassland birds in areas managed with fire and grazing
… nest sites with more woody cover, while eastern meadowlarks (Sturnella magna) and grasshopper sparrows (Ammodramus savannarum) selected areas with increased cover of warm-season grasses and litter. Though I observed strong trends in selection, selected traits did not appear to influence nest …
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Wildlife Response to Stand Structure of Green Ash Woodlands
… greater number (P < .10) of western meadowlarks were found in open stands than closed stands. Bird species composition was 84% similar between open and closed stands and Spearman's rank order was significant (P = .001) with a correlation coefficient of r = .7, indicating little …
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Avian and Aquatic Invertebrate Abundance on Three Agricultural Management Systems in Eastern South Dakota
… Dickcissels (Spiza americana) and western meadowlarks (Sturnella neglecta) in 1993 oats and yellow-headed blackbirds (Xanthocephalus xanthocephalus) in 1993 alfalfa were found to be significantly more abundant on the CON system. The remaining B species were significantly higher on the ORG …
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A myological and osteological comparison of the pelvic appendage of the male and female western meadowlark
<p>Sexual dimorphism has been noted to exist in many genera of birds, but it is not until recently that papers have appeared which deal with the actual extent of sexual dimorphism and its possible adaptive significance. The papers of Rand (1952), Sibley (1957), Amadon (1959), and Selander (1966) …