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.
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Showing 1 to 20 of 24 for “"post-breeding"”.
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Post-breeding public information use in a ground-nesting songbird community
… Veery fledgling vocalizations present during the post-breeding season are PI cues used by Veeries and other ground-nesting songbirds (i.e., Ovenbirds [Seiurus aurocapilla]) for territory establishment in subsequent breeding seasons. Moreover, I hypothesize that ground-nesters integrate multiple …
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Pituitary Prolactin Content of the Redwinged Blackbird at Pre-Breeding, Breeding and Post-Breeding Intervals
Environmental and physiological control of incubation behavior in wild and domesticated birds has been under investigation for the past thirty-five years. Most of the early literature deals with the non-passerines, specifically doves, pigeons and fowl. However, recent work has involved the order …
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Survival and habitat use of the Kirtland’s Warbler in the breeding and post-breeding periods
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms
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Linking foraging behaviour of post-breeding adult female elephant seals from Marion Island to physical dynamics and productivity at the South-West Indian Ridge
… than as a direct indicator of prey density. Post-breeding, adult female southern elephant seals from Marion Island were tagged with conductivity, temperature and depth satellite-relayed data loggers (CTD-SRDL's) and their foraging behaviour was examined in relation to different chlorophyII-a …
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Factors Associated with Space Use and Reproductive Success of American Kestrels in Northern Virginia, USA
Understanding how breeding-season space use varies across individuals and landscapes can provides insight into the resource requirements of species. My thesis evaluated the space use of American kestrels (Falco sparverius), a species of conservation concern, and tested whether their movement …
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Seasonal changes in the foraging methods and habitats of six sympatric woodpecker species in southwestern Virginia
… were studied in southwestern Virginia during the breeding season, post-breeding season, and winter. The food resource used by the six species was partitioned by species' use of different macro-habitats (forest structure), micro-habitats (positions within trees), and foraging methods. Differences …
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Aspects of American Bittern Ecology in Northwest Minnesota
<p>American bittern breeding populations have been declining for at least 3 decades. Lack of information on life history traits precludes the conclusive determination of causal factors. The objectives of this study, conducted in northwest Minnesota, were to 1) estimate summer home-range size of …
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Conservation of Grassland Birds in an Agricultural Landscape: The Importance of Habitat Availability and Demography
… of surrounding farmland, especially for post-breeding females and post-fledging juveniles. Additional experimental creation of more isolated grassland tracts would help test the hypothesis that clusters of nearby grasslands are preferable to more isolated tracts.
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Migration and moult strategy of the curlew sandpiper
… to the different migratory routes and non-breeding areas of the species, focusing on the carry-over effects which conditions at the breeding grounds have on the timing of post-breeding migration and, subsequently, on the timing of moult at the non-breeding areas. Part of the study also …
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Sources And Consequences of Ecological Intraspecific Variation In The Florida Scrub Lizard (Sceloporus Woodi)
… are more apt to move to attack prey during the post-breeding season. These behavioral differences translated into a more diverse and higher volume diet in females during the breeding season. Even though both sexes showed the same seasonal patterns in foraging behavior, their diets changed in the …
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Impacts of microenvironment variation during breeding and gestation on the reproduction and well-being of mature gilts
… of room temperature and light intensity prior to breeding and into early gestation were evaluated on the reproductive performance and well-being of gilts housed individually in crates. In eight replicates, estrus was synchronized in mature gilts (n = 198) and after last feeding of Matrix were …
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Retention of early pregnancy and its relationship to serum progesterone in dairy cattle
… dairy cows (N = 211). Beginning on day 28 to 37 post breeding, cows were examined by ultrasonography for a viable pregnancy. Pregnant cows were re-examined for pregnancy losses during the late embryonic (≤day 45) and early fetal stages up to day 67. Overall pregnancy loss was 11%, mostly …
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Relation of Missouri river flows to sandbar morphology with implications for selected biota
… wetted perimeter in July and August for post breeding wading birds and during the beginning of autumn shorebird migration while also creating more emergent sandbar habitat during softshell turtle nesting. Flows under the current flow regime and selected management alternatives provided …
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Intraspecific and Interspecific Agonistic Behavior in Chipmunks, TAMIAS MERRIAMI, T. OBSCURUS, and T. SPECIOSUS (Rodentia: Sciuridae)
… California. The study was conducted during the post-breeding periods in the summers of 1983 and 1984. Chipmunks were attracted to feeding stations baited with sunflower seeds. Their aggressive interactions were classed as displacement, short chase, long chase, or fight. Over 500 encounters were …
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Habitat selection and survival of juvenile black-capped vireos during the post-fledging period
… of songbirds have stimulated much research on breeding, migration, and wintering ecology. Until recently, the post-breeding season, the period from the completion of breeding and the onset of migration, has been overlooked. During this period, juvenile birds independent of parental care must …
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Habitat Selection and Sexual Suggestion of Rocky Mountain Bighorn Sheep in Custer State Park, South Dakota
… segregation occurs year-round except during the breeding season (November and December) when the sexes congregate on a traditional breeding range (cf. Geist 1971, p 209). These studies also have shown that the sexes remain separated during the winter, when segregation should be least likely. …
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Habitat, abundance and productivity of the Asian Houbara Chlamydotis macqueenii in Uzbekistan
… such as population reinforcement through captive breeding, it is important to explore potential in situ measures that could be used to mitigate species off-take by supporting breeding productivity of wild populations. Asian houbara Chlamydotis macqueenii is a globally threatened bird, with …
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Terrestrial Movements and Habitat Use of Gopher Frogs (Rana capito) at Fort Benning, Georgia
… were radio-tracked between the 2000 and 2001 breeding seasons to study their terrestrial movements and habitat use in a longleaf pine- sandhill area on the Fort Benning Military Reservation, Georgia. The telemetry research was conducted in response to the need for biological data concerning …
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Effects of prepartum supplement level and age of weaning on dam performance and developmental programming of male progeny
… hulls; fed 103 ± 11 d prepartum to 2 ± 11 d postpartum): no supplement (NS), 2.16 kg/d∙hd-1 (LS), or 8.61 kg/d∙hd-1 (HS), and 2 ages of weaning: 78 ± 11 d of age (EW) or 186 ± 11 d of age (NW). Cow BW was greater (P < 0.01) for cows fed HS at pre-calving (49 ± 11 d prepartum), post-calving …
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Below-Ground Food Production in Habitats Utilized by the Rocky Mountain Populations of Greater Sandhill Cranes
… (wintering, spring staging, spring stopover, breeding, post-breeding, and fall staging). Below-ground foods were sampled in sandhill crane foraging habitats at three United States Fish and Wildlife Service (USFWS) National Wildlife Refuges (NWR) in the Intermountain West where these life cycle …
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