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Showing 1 to 14 of 14 for “"Dendroica"”.
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Winter habitat use by Blackburnian Warblers (Dendroica fusca) in Los Amarillos, Colombia
Blackburnian Warblers (Dendroica fusca) were observed in their wintering grounds in a High Andean native secondary forest in Colombia between September 1993 and May 1994. The main objective of the study was to determine the relationships between the Blackburnian Warblers and the habitats where they …
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Occupancy and Abundance of Golden-cheeked Warblers (Dendroica chrysoparia) on the Balcones Canyonlands Preserve
… endangered golden-cheeked warbler (GCWA, Dendroica chrsoparia) by means of point-count surveys conducted at two sites exhibiting high and low population densities. Surveys consisted of four surveyors simultaneously, but independently recording the number of GCW A detected during …
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The Magnolia Warbler <em>Dendroica magnolia</em> on Unaka Mountain, Unicoi County, TN: Possible Breeding and Habitat Analysis.
<p>The chief purpose of this study is to provide information on the habitat and breeding information of Magnolia Warblers on Unaka Mountain. Magnolia Warblers breed in Canada and the Northeastern United States. There are no current breeding records for this species in Tennessee.</p> <p>For the …
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Changes in Patterns of Territory and Habitat Overlap in Wood-Warblers Over Evolutionary Time
… different habitats. I used the radiation of Dendroica wood-warblers to test these two alternative hypotheses and determine how closely related species partition space and habitat, and how patterns of spatial overlap and habitat use change over evolutionary timescales. I measured territory and …
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Réponse démographique de passereaux forestiers à une coupe de jardinage expérimentale
… (Seiurus aurocapilla) et la Paruline bleue (Dendroica caerulescens)".
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The Effects of Forest Management on Birds in the Black Hills of South Dakota
… except meadows. The Yellow-rumped Warblers (Dendroica coronata) were abundant in ponderosa pine habitats and Warbling Vireos (Vireo gilvus) were abundant in aspen habitats averaging 0.64 and 1.12 birds/50 m radius, respectively. Species richness and species diversity were higher (P < 0.1) in …
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Effects of Mid-Rotation Release on Forest Structure, Wildlife Habitat, and Pine Yield
… index (HSI) values for pine warblers (Dendroica pinus L.) and black-capped chickadees (Parus atricapillus L.) increased due to reductions in canopy hardwoods and increases in snags. Reduced shrub stratum density resulted in a lower bobwhite quail (Colinus virginianus L.) cover index on …
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Breeding bird communities and habitat selection in the Appalachian Mountains of Southwest Virginia
… mixed oak-pine habitat, and the pine warbler (Dendroica pinus) and rufous-sided towhee (Pipilo erythrophthalmus) were observed exclusively in the mixed oak-pine areas. The relative density of the singing males was significantly greater in 1978 than in 1977. Multiple discriminant and regression …
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Evidence for Local Adaptation in Birds
… divergent nest morphologies of Yellow Warblers (Dendroica petechia) using reciprocal nest transplant experiments between a temperate and subarctic site in Canada. Yellow Warblers breeding at our subarctic site build larger nests constructed with more insulative materials than Yellow Warblers …
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Wax Myrtle and Myrtle Warblers: Reciprocal Specialization and its Consequences in a Temperate Fruit-Frugivore Interaction
… the myrtle group of yellow-rumped warblers (Dendroica coronata coronata) and wax myrtle (Myrica cerifera). Far from being one of a group of ecologically redundant dispersers, these warblers are the most valuable quantitative and qualitative contributors to this plant's recruitment on …
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Ecological Factors Associated With Songbird and Small Mammal Predation by Texas Ratsnakes
… nests, and 228 Golden-checked Warbler (Dendroica chrysoparia) nests. I found that snakes exhibited habitat selection at multiple spatial scales, although the hypothesis that snakes chose habitats based on prey abundance (small mammals and birds) was only weakly supported. Snakes were …
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Spring Phenology and Trophic Ecology of Trees, Caterpillars, and Migrating Neotropical -Nearctic Songbirds
… (caterpillars), and (3) yellow-rumped warbler (Dendroica coronata) migration phenology and tree preferences relate to tree phenology and insect abundance. Among all three years, tree and caterpillar phenology varied in accordance with spring temperature. The timing of bird migration through the …
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Canopy Characteristics Affecting Avian Reproductive Success: The Golden-cheeked Warbler
… habitat alterations. The golden-cheeked warbler (Dendroica chrysoparia) is a Neotropical migrant songbird that breeds exclusively in central Texas. In 1990, the U.S. Fish and Wildlife Service listed the golden-cheeked warbler as endangered, providing habitat loss among the list of justifications. …
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Coupe progressive et exploitation forestière à l'échelle du paysage: influence relative sur la productivité de deux passereaux forestiers
… migrateurs Néotropicaux, la Paruline bleue (Dendroica caerulescens) et la Paruline couronnée (Seiurus aurocapillus). J'ai également examiné l’influence de la coupe progressive sur la sélection de l’habitat de nidification et sur le succès de reproduction de la Paruline bleue. Pour les fins de …