Global ETD Search
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Showing 1 to 18 of 18 for “"vireos"”.
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Physiological, Behavioral and Reproductive Responses of Black -Capped Vireos and White -Eyed Vireos to Human Disturbance
… corticosterone levels in white-eyed vireos during the breeding season at sites with heavy military training activities and sites where training activity was restricted on Fort Hood, Texas. Plasma corticosterone concentrations <4 minutes post-capture (baseline) and capture-induced …
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Scholia on vireos: a field guide to the family Vireonidae
Using birds as image bearers, Scholia on Vireos: A Field Guide to the Family Vireonidae is a bird book of poems. The poems are foremost an experiment in the form and music of contemporary poetry. Each genus of the family has a particular form which was developed to represent it, and the syllable …
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Habitat selection and survival of juvenile black-capped vireos during the post-fledging period
… selection and survival of juvenile black-capped vireos (Vireo atricapilla) following their independence from parental care, from 2010-2013 in central Texas. The black-capped vireo is a federally endangered migratory songbird that nests almost exclusively in shrub vegetation, but previous …
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Comparative reproductive biology of co-occurring endangered and common shrubland birds
Black-capped vireos (Vireo atricapilla) and white-eyed vireos (Vireo griseus) are closely related and ecologically similar. Despite these similarities, white-eyed vireos are widely distributed and common, whereas the black-capped vireo has a restricted breeding range and is federally endangered. …
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A test of the signal transmission hypothesis of vocal imitation in the white-eyed vireo (Vireo griseus)
… Virginia and eastern North Carolina. White-eyed Vireos are hypothesized to imitate notes from other birds which transmit efficiently through dense habitat. Male White-eyed Vireos did not respond differently to playback of each other I s songs. The song repertoires between Virginia and North …
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Population Dynamics of the Endangered Black-capped Vireo (Vireo atricapilla)
… breeding territories and tracked juvenile vireos using radio-telemetry. Vireos in general selected shrubland and forest habitats; canopy cover may present a tradeoff that improves juvenile survival but reduces breeding success. We recorded vocalizations at vireo nests and found little …
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The Effects of Forest Management on Birds in the Black Hills of South Dakota
… 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 aspen than in ponderosa pine or meadows. Sapling-pole structural stages of …
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Impacts of group selection harvest openings on the reproductive success of the Solitary Vireo (Vireo solitarius alticola)
Solitary Vireos (Vireo solitarius alticola) were studied on an extensive mature forest landscape in 1994 and on three sites harvested using the group selection method in 1995. Pairing success was 88% on the unharvested site in 1994, however it was lower on the harvested sites in 1995 (53.8%). Low …
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Spring Phenology and Trophic Ecology of Trees, Caterpillars, and Migrating Neotropical -Nearctic Songbirds
… caterpillars, and wood warblers (Parulidae) and vireos (Vireonidae) during spring migration in 2001--2003 at Trelease Woods, a deciduous forest fragment near Urbana, Illinois, USA (40°09'N, 88°10'W). I hypothesized that (1) the photoperiod-driven pattern of migration of wood warblers and …
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Avian assemblages and Red-eyed Vireo nest survival within mineland forest
… and 2) contrast nest survival of Red-eyed Vireos (Vireo olivaceus) breeding within mineland and reference forest.;I conducted this research in 2011 within New River Gorge National River in southern West Virginia. I surveyed avian assemblages and sampled stand structure and composition along …
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Habitat use by nongame birds in central Appalachian riparian forests
… Carolina wrens, American robins, and red-eyed vireos showed weaker but positive associations with the streams. Eastern wood-pewees, black-and-white warblers, pine warblers, worm-eating warblers, and scarlet tanagers demonstrated a negative association with streams. A cluster analysis was used …
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Effects of Prescribed Burning on Black-Capped Vireo Habitat, Territory Establishment, and Production
… establishment and production by Black-capped Vireos.
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Effects of non-native woody plant species on shrubland birds of conservation concern
… ability) of all three species. Bell’s Vireos had higher corticosterone concentrations in relation to increasing prevalence of autumn olive. Yellow-breasted Chats and Field Sparrows had lower triglyceride concentrations in relation to increasing prevalence of honeysuckle, and all three …
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Grassland and Woodland Bird Occurrence and Habitat Selection in the Prairie-Forest Transition Zone of Minnesota
… Wrens<em> (Troglodytes aedon)</em>, Red-eyed Vireos <em>(Vireo olivaceus)</em>, Northern Cardinals<em> (Cardinalis cardinalis)</em>, and Great Crested Flycatchers <em>(Myiarchus crinitus)</em> were present on the most woodland points.</p>
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Inference of phylogenetic relationships in passerine birds (Aves: Passeriformes) using new molecular markers
… a revision of the taxa Corvidae and Corvinae as vireos are closer related to crows, ravens, and allies. The subdivision of the Passerida into three superfamilies, Sylvioidea, Passeroidea, and Muscicapoidea was strongly supported. I found evidence for a split within Sylvioidea into two clades, one …
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The Effects of Global Change on Avian Biodiversity
… Conversely, the breeding grounds of Bell's Vireos contain more cowbirds than expected, putting them at high risk of nest parasitism. Second, I used relationships between abundances of Atlantic Cod and other fish and invertebrate species to improve predictions of Atlantic Cod, whose …
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Effects of prescribed fire on breeding forest songbird abundances in central and Southern Illinois
… amount of forest cover within 2 km. Red-eyed vireos (Vireo olivaceus) were more likely to occur in areas of non-managed forest compared to forests that were frequently or infrequently burned. These results suggest that prescribed fire, particularly burn frequency, can increase or decrease …
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Habitat use, population size, and nesting ecology of conservation priority bird species using restored fields in agricultural landscapes
… third question demonstrated that nesting Bell’s Vireos and Willow Flycatchers selected habitat that increased nest survival, but not number of young fledged from successful nests, in these drastically altered landscapes. Patterns between nest survival and selected habitat features were apparent …