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Full-Text Articles in Life Sciences
Agriculture Is Adapting To Phenological Shifts Caused By Climate Change, But Grassland Songbirds Are Not, Maeve M. Mcgowan, Noah G. Perlut, Allan M. Strong
Agriculture Is Adapting To Phenological Shifts Caused By Climate Change, But Grassland Songbirds Are Not, Maeve M. Mcgowan, Noah G. Perlut, Allan M. Strong
Environmental Studies Faculty Publications
Migratory birds time their migration based on cues that signal resource availability for reproduction. However, with climate change, the timing of seasonal events may shift, potentially inhibiting the ability of some species to use them as accurate cues for migration. We studied the relationship between phenological shifts and reproduction by long- and short-distance migratory songbirds—Bobolinks (Dolichonyx oryzivorus) and Savannah Sparrows (Passerculus sandwichensis). Our study population breeds in hayfields and pastures in Vermont, USA, where farmers are also changing management activities in response to climate change. From 2002 to 2019, we monitored nest initiation dates to quantify …
Diverse Demographic Factors Influence Apparent Juvenile Survival In A Migratory Songbird, Emma M. White, Noah G. Perlut, Steven E. Travis, Allan Strong
Diverse Demographic Factors Influence Apparent Juvenile Survival In A Migratory Songbird, Emma M. White, Noah G. Perlut, Steven E. Travis, Allan Strong
Environmental Studies Faculty Publications
To better understand the dynamics of avian populations and their role in population trends, we require an in-depth understanding of the factors influencing the survival of adults and juveniles. How-ever, assessing survival in juveniles is often challenging, especially in small, migratory species where individuals typically disperse from the study area and are not available for recapture in subsequent years. Bobolinks (Dolichonyx oryzivorus) are a long-distance migrant that exhibits natal philopatry in at least one population, allowing for more comprehensive juvenile survival analyses than in many other long-distance avian migrants. Using a 17-yr dataset from two sites representing a …
Management Schemes, Not Philopatry Or Breeding Experience, Affect Nest Success Of Two Songbirds In Vermont Hayfields, Kylie Denny, Noah G. Perlut, Allan Strong
Management Schemes, Not Philopatry Or Breeding Experience, Affect Nest Success Of Two Songbirds In Vermont Hayfields, Kylie Denny, Noah G. Perlut, Allan Strong
Environmental Studies Faculty Publications
Songbirds can benefit from natal philopatry through prior knowledge about site‐specific resources and local adaptation to environmental conditions. Likewise, breeding experience may also play a role in reproductive success. However, for birds that breed in managed habitats, management activities may overwhelm any potential benefits of philopatry or breeding experience. We examined the effect of site fidelity on reproductive success in 1,823 bobolink and Savannah sparrow nests in agricultural grasslands in Vermont, USA. From 2003–2019 we monitored the nests of 51 female Savannah sparrows and 72 female bobolinks that returned to breed on or near fields in which they hatched between …