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Full-Text Articles in Animal Sciences

Effects Of Protective Nesting Site Properties On Gyrfalcon Breeding Success And Parental Investment In Western Alaska, Michael Thomas Henderson Aug 2019

Effects Of Protective Nesting Site Properties On Gyrfalcon Breeding Success And Parental Investment In Western Alaska, Michael Thomas Henderson

Boise State University Theses and Dissertations

Habitat suitability for wildlife is defined at scales ranging from the landscape to an individual breeding site. Areas that fulfill habitat requirements for birds disproportionally maintain populations, and the identification of variables that distinguish optimal breeding sites helps to prioritize conservation. Nesting site characteristics that protect breeding raptors from harsh weather can promote a more favorable microclimate and increase breeding success, although previous attempts to understand this effect in breeding Gyrfalcons have yielded ambiguous results. Additionally, breeding adults incur substantial costs from the physical shielding of eggs and nestlings, particularly in the Arctic, and it is possible that protective properties …


Old Enemies With New Problems?: Investigating The Ecological Relationship Between Ridgway’S Hawk And The Parasitic Nest Fly Philornis Pici, Christine Deegear Hayes Aug 2019

Old Enemies With New Problems?: Investigating The Ecological Relationship Between Ridgway’S Hawk And The Parasitic Nest Fly Philornis Pici, Christine Deegear Hayes

Boise State University Theses and Dissertations

Modern conservation efforts tend not to focus on individual species, but rather on the entire ecosystem of a species in peril. Many ecological factors can affect a species’ ability to maintain healthy populations. Parasites, which derive nutrients at the expense of their hosts, can reduce host fitness and limit population growth, acting as biological controls in healthy ecosystems. The negative impacts of parasites on their hosts can be exacerbated by climate change and anthropogenic land-use practices in ways that may limit recovery or drive host species to extinction. Introduced parasitic nest flies in the genus Philornis (Diptera: Muscidae) are threatening …