Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"tree swallow"”.
-
The relationship between temperature, rainfall, and tree swallow fledging times
… and average daily rainfall on how long it takes tree swallow nestlings in Tennessee to fledge using multi-linear regression and linear mixed-effects modeling. I found that minimum temperatures, maximum temperatures, maximum rain experienced in a one-day period, and total rain all had a …
-
Impact of Reconstructed Wetlands on the Tree Swallow (Tachycineta bicolor)
Tree swallow (Tachycineta bicolor) nestlings were used as a sentinel species to evaluate the bioavailability and effect of contaminants to terrestrial life at reconstructed wetlands, Kingman Lake and Kenilworth Marsh, on the Anacostia River. Nesting success, survival, growth and developmental …
-
Indirect effects of agricultural intensification on tree swallow (Tachycineta bicolor) foraging behaviour, body condition, and physiology
… insects – have exhibited sharp declines, with tree swallows (Tachycineta bicolor) experiencing a 2.8% annual decline in Canada since 1989. The timing of these declines coincides with major changes in agriculture, perhaps signaling a potential causal link. Declines may be influenced indirectly …
-
Stress eating? Causes and consequences of variation in foraging behavior in a challenging world
… in a declining aerially insectivorous bird, the tree swallow (Tachycineta bicolor).In Chapter 1, I explore whether glucocorticoids affect total activity and offspring feeding rate. Birds with experimentally elevated corticosterone (the primary glucocorticoid hormone in birds) were initially less …
-
Passerine Exposure to Metal Contaminants from Oilsands Mining in the Athabasca Region of Northeastern Alberta, Canada
… measured metal concentrations in whole blood of tree swallows (Tachycineta bicolor), Tennessee warblers (Oreothlypis peregrina), and chipping sparrows (Spizella passerina). Additionally, I measured metal concentrations in kidney, liver, and stomach contents of nestling tree swallows, and …
-
Study of the microstructure and mechanical properties of hummingbird wing-bones
… of an Anna's hummingbird (Calypte Anna) and a tree swallow (Tachycineta bicolor) was conducted to determine whether the hummingbird bones exhibited unique features due to the high wing loading of the bird. It was hypothesized that the hummingbird's ability to hover, flapping its wings at an …
-
Nestling Diet, Quality, and Post-fledging Survival: Comparing Two Species of Aerial Insectivores in a Gradient of Agricultural Intensity in Saskatchewan, Canada
… approach between two sympatric species, Barn Swallows (Hirundo rustica) and Tree Swallows (Tachycineta bicolor), following a scale-of-effect approach, I investigated whether the intensity of agriculture was associated with parental selection of prey resources, nestling body condition and …
-
Perceived Predation Risk And The Responses Of Adult And Nestling Tree Swallows (tachycineta Bicolor)
… the vocal responses of cavity-nesting adult Tree Swallows (Tachycineta bicolor) to different nest predators, some able and others unable to enter nest cavities, and to examine the responses of nestlings to those vocalizations. My study was conducted from April to July 2016 at the Blue Grass …
-
Factors influencing pre-fledging mass recession of nestling Tree Swallows
… to pre-fledging mass recession by nestling Tree Swallows (Tachycineta bicolor). My study was conducted during the 2015 breeding season at the Blue Grass Army Depot in Madison County, Kentucky. Nestling Tree Swallows (n = 127) in 29 broods were divided into half-weighted (n = 32), …