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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 47 for “"stopover"”.
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Gut Microbiota of Migratory Passerines at Stopover
… related to changes in energetic condition at stopover. Plastid DNA was found to be abundant in the feces of many birds, correlating to seasonal patterns of frugivory in migrants. Taken together, these results suggest that the gut microbiota of migratory passerines is a diverse and dynamic …
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Migratory Stopover of Songbirds in the Western Lake Erie Basin
Songbirds use multiple stopover locations to rest and refuel for subsequent flights while migrating between breeding and non-breeding areas. Selection of high quality stopover habitat may allow migrants to minimize time and energy spent in migration and maximize fitness. Migrants should therefore …
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Tick Infestations and Their Consequences for Migratory Songbirds During Spring Stopover
<p>Migratory birds face a number of challenges during their seasonal movement from tropical/sub-tropical Central and South America to more temperate North America. Maintaining health during migration is of particular concern. This study seeks to understand how haematophageous ectoparasites, such as …
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Comparison of grassland bird stopover and breeding habitat use in Illinois
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-05-01
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The effect of urbanization on the stopover ecology of neotropical migrant songbirds
I conducted spring migration point counts and vegetation surveys at 29 forest patches in the Chicago, IL metropolitan area in 2012 and 2013. The forest patch selection was designed to test the effects of patch size, distance from the Lake Michigan shoreline and degree of urbanization. I conducted …
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The Effect of Area on Resource Competition among Migrant Birds at a Stopover Site
… and/or increasing competition at crowded stopover sites. I predicted that smaller forest fragments would have higher densities of birds, and that birds would compete for food more intensely in smaller fragments. I examined seven forest fragments of varying size (0.69 ha - 5.69 ha) at …
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Stopover behavior and refueling physiology in relation to migration distance in Wilson's Warblers (Wilsonia Pusilla)
… migration distance within a species affects stopover behavior and refueling rate. Wilson’s Warbler is a leapfrog migrant passerine that winters in Central America and breeds throughout North America. Birds were captured in the spring and fall of 2006 during passage through a desert stopover …
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Effects of Hurricane Disturbance on the Stopover Ecology of Intercontinental Landbird Migrants in Coastal Louisiana
… of weather events on migratory birds during stopover, and essentially none on how hurricanes affect their stopover biology during spring passage. About two thirds of eastern North American forest breeding bird species migrate twice annually between temperate breeding areas and subtropical and …
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Stopover duration and habitat use of spring-migrating dabbling ducks in the Wabash River Valley, USA
… period of the waterfowl annual cycle. Stopover sites along migration routes contain habitats and resources required by waterfowl to rest and refuel before continuing north to the breeding grounds. The Wabash River Valley (WRV) in southeastern Illinois provides habitat for over 500,000 …
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Factors most closely explaining activity patterns and behavior of northern saw-whet owls in migratory stopover habitat
… Illinois—a site used by NSWO as a migratory stopover and wintering location. The goal was to investigate how activity patterns (i.e., movements) in the dusk, dawn, and night were impacted by environmental covariates. Owls were most active at dusk and dawn and on warmer darker nights with …
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Assessment of Factors Influencing Migratory Landbird Use of Forested Stopover Sites Along the Delmarva Peninsula During Autumn Migration
… South America, with many individuals relying on stopover habitats en route for resting and refueling purposes. These stopover sites are critical to the survival of the hundreds of species of migratory landbirds that migrate annually, and thus identifying important stopover sites is a high …
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Understanding the spring migration ecology of Sora and Virginia Rail in central Illinois: a study utiilizing automated telemetry
… about the spring migratory connectivity and stopover ecology of Sora and Virginia Rail is lacking. Much of the wetland habitat required by these secretive marsh birds has been lost across the Midwest over the last 200 years due to agriculture and urban development. Stopover sites are critical …
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Spring Landbird Migration along the Northern Coast of the Gulf of Mexico: Multi-Scaled Investigation of Stopover Ecology Within an Urbanized Landscape
… coastal habitats and identifying important stopover areas across the entire GOM to create a framework for monitoring critical habitats, design management and restoration strategies, and inform conservation goals.</p> <p>I used a multi-scaled approach to investigate migrant-habitat relations …
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Born to fly - migratory strategies and stopover ecology in the European Wadden Sea of a long-distance migrant, the Bar-tailed Godwit (Limosa lapponica)
… Afro-Siberian population of Bar-tailed Godwits stopover on their migration between wintering and breeding areas. Birds of the European population stayed during spring stopover for 30-40 days in the study area. Birds were extremely site faithful to their spring stopover site showing an annual …
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Studies of the Annual Cycle of the Swallow-Tailed Kite (<em>Elanoides forficatus</em>): Migration, Habitat Use, and Parasites
… cycle that could have conservation significance: stopover behavior on Cuba and the Yucatan Peninsula, range-wide habitat associations, and parasites. Because Cuba and the Yucatan Peninsula are situated along the migratory route after a long over-water crossing, they may be potentially important …
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Ecology of fall-migrating ducks in central Illinois: a radar perspective
… ducks as they emigrated from this important stopover area. With this technique, I quantified duck emigrations during 7 falls (1996, 1997, 2003, and 2005-2008). I used WSR-derived estimates of annual turnover in combination with aerial inventory estimates of duck use to estimate the average …
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Improving the Use of Migration Counts for Wildlife Population Monitoring
… vs. non-daily sampling) and a temporal change in stopover duration (and thus detection probability) influenced our ability to estimate the known trend. I also tested whether analyzing data as hourly, daily or annual counts, or accounting for random error using analytical techniques, could improve …
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Relationship of human intrusion on avian body mass: Do recreationists hinder birds’ abilities to acquire fat during migration?
… which is energetically costly. Quality stopover sites are crucial to avian survival, as they provide opportunities to quickly replenish fat stores, rest, and avoid predation. One component of habitat quality that is often overlooked is the level of pedestrian activity, which birds …
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Factors affecting Western Atlantic red knots (Calidris canutus rufa) and their prey during spring migration on Virginia's barrier islands
… 'red knot') use Virginia's barrier islands as stopover habitat to regain the fat required to continue flights to breeding grounds. Because the red knot completes one of the longest avian migrations in the world and relies on variable prey resources at its stopover grounds, the red knot …
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