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Showing 1 to 15 of 15 for “"Ammodramus"”.
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Nest predation and habitat selection in the grasshopper sparrow (Ammodramus savannarum)
… nest-site selection by grasshopper sparrows (Ammodramus savannarum). I used near-infrared video cameras to identify nest predators and followed breeding females on multiple nesting attempts within a breeding season. Burning reduced losses by snakes (Thamnophis and Coluber spp.), whereas …
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A population study and management suggestions for the Denslow's Sparrow (Ammodramus henslowii) at Fort, Drum, NY
The Henslow' s Sparrow (Ammodramus henslowii) is one of the most threatened grassland bird species in North America. It is listed as endangered, threatened, or a species of concern in 30 of 32 states and one Canadian province in its historic range. This obligate grassland breeding bird species is …
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Habitat Characteristics Affecting Site Occupation in Wintering Henslow’s Sparrows at Mississippi Sandhill Crane National Wildlife Refuge
<p>Henslow’s sparrow (<em>Ammodramus henslowii) </em>winters in recently burned sites in pine savannas of the Southeastern United States. Previous studies have suggested that factors such as seed abundance and litter depth are important to wintering Henslow’s sparrows. My study asked how habitat …
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Evaluating the Use of Autonomous Recording Units to Monitor Yellow Rails, Nelson's Sparrows, and Le Conte's Sparrows
… noveboracensis) (YERA), Nelson’s sparrows (Ammodramus nelsoni) (NESP), and Le Conte’s sparrows (Ammodramus leconteii) (LCSP) are poorly known, so systematic surveys of these elusive species are needed to inform conservation planning and guide management. A standardized protocol for …
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Habitat selection in restored grasslands: the role of social cues in the settlement of Grasshopper Sparrows
… the settlement behavior of Grasshopper Sparrows (Ammodramus savannarum) in new habitats. I played conspecific vocalizations at newly created grasslands and compared settlement rates and breeding densities at those sites to control sites, without vocalizations. A subset of sites was monitored for …
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Nesting Success of Grassland Birds in Fragmented and Unfragmented Landscapes of North Central South Dakota
… (Sturnella neglecta); grasshopper sparrow (Ammodramus savannarum); savannah sparrow (Passerculus sandwichensis); ringnecked pheasant (Phasianus colchicus); and dabbling ducks (Anas spp.). Response to landscape and patch variables varied among species. Larger patches were positively …
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The Effects of natural Gas Development on Density, Reproductive Success and Nest Survival of Grassland Songbirds in South-Western Saskatchewan
… (Passerculus sandwichensis), Baird’s Sparrow (Ammodramus bairdii), Horned Lark (Eremophila alpestris) and Western Meadowlark (Sturnella neglecta). I quantified and compared aspects of their breeding biology with published data in other parts of their range. Reproductive rates were typical of …
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Nesting Success of Dickcissel (Spiza americana) and Non-breeding Grassland Bird Use of Northwest Arkansas’ Remnant and Restored Tallgrass Prairies
… utilized burned areas, and Le Conte’s Sparrow (Ammodramus lecontei) frequented shrubs. Northwest Arkansas’ remnant and restored tallgrass prairies are valuable for nesting Dickcissel and a suite of non-breeding grassland birds. Special consideration for maintaining large parcels with fire that …
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Habitat selection and breeding ecology of grassland birds in areas managed with fire and grazing
… (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 success, likely due to the diversity of nest predators in …
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Using Occupancy Models to Predict Grassland Bird Distributions in Southeastern Alberta
… were collected for: Baird's Sparrow (Ammodramus bairdii), Brown-headed Cowbird (Molothrus ater), Chestnut-collared Longspur (Calcarius ornatus), Clay-colored Sparrow (Spizella pallida), Horned Lark (Eremophila alpestris), Long-billed Curlew (Numenius americanus), Marbled Godwit (Limosa …
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Grassland and breeding bird use of moist-soil wetlands managed for waterfowl
… nester) and grasshopper sparrows (Ammodramus savannarum, an obligate-grassland nester). I also observed the state endangered northern harrier (Circus cyaneus), common gallinule (Gallinula galaeta), and Forster's tern (Sterna forsteri) in moist-soil wetlands. Dewatered moist-soil …
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Diagnostic techniques for detecting exposure and anemia in birds exposed to crude oil
… rails (Rallus crepitans), and seaside sparrows (Ammodramus maritimus) through both visual evaluation of and under the application of ultraviolet light to individual birds potentially exposed to oil. I found that there were many individual birds with modest oil exposure, demonstrating that more …
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Eastern Meadowlark migration, nest success, and response to land use change in Illinois
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
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EFFECTS OF SCALE AND HABITAT MANAGEMENT ON GRASSLAND BIRD RESPONSE IN CONSERVATION RESERVE PROGRAM FIELDS IN NORTHWEST ILLINOIS
… (Dolichonyx oryzivorus), Henslow’s sparrow (Ammodramus henslowii), eastern meadowlark (Sturnella magna), field sparrow (Spizella pusilla), and northern bobwhites (Colinus virginianus), due to the release of tall forbs within the seed bank after spraying brome dominated fields. Dramatic …
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Modeling Saltmarsh Sparrow Distribution in Connecticut
<p>To develop a map that would predict where saltmarsh sparrows live and reproduce in Connecticut, I compared models to test a) whether field data or remote-sensing data most effectively characterized within-marsh conditions that relate to sparrow occurrence, and b) whether including …