Ellen D. Ketterson
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View article: Regional- and season-specific exposure to lead in a common North American songbird
Regional- and season-specific exposure to lead in a common North American songbird Open
The determinants and physiological consequences of exposure to heavy metals remain poorly understood for songbirds. The American Robin (Turdus migratorius) is a common songbird in a variety of habitats across most of North America that cou…
View article: Determinants of spring migration departure dates in a New World sparrow: Weather variables reign supreme
Determinants of spring migration departure dates in a New World sparrow: Weather variables reign supreme Open
Numerous factors influence the timing of spring migration in birds, yet the relative importance of intrinsic and extrinsic variables on migration initiation remains unclear. To test for interactions among weather, migration distance, paras…
View article: Determinants of spring migration departure dates in a New World sparrow: weather variables reign supreme
Determinants of spring migration departure dates in a New World sparrow: weather variables reign supreme Open
Numerous factors influence the timing of spring migration in birds, yet the relative importance of intrinsic and extrinsic variables on migration initiation remains unclear. To test for interactions among weather, migration distance, paras…
View article: Movement-related drivers of exposure to West Nile virus by American robins (<i>Turdus migratorius</i>)
Movement-related drivers of exposure to West Nile virus by American robins (<i>Turdus migratorius</i>) Open
The ecological processes that determine how individual animals become hosts to zoonotic pathogens is a topic of rapidly growing interest. However, how such exposure is mediated by context (e.g., season, location), host behavior (e.g., migr…
View article: Chronic disturbance induces attenuation of the acute glucocorticoid response in an urban adapter, the dark-eyed junco
Chronic disturbance induces attenuation of the acute glucocorticoid response in an urban adapter, the dark-eyed junco Open
Urban birds’ stress response frequently differs in magnitude from non-urban conspecifics. This urban phenotype may reflect response to selection, sorting during colonization of urban environments, developmental plasticity, or phenotypic fl…
View article: Physiological impacts of chronic and experimental Plasmodium infection on breeding-condition male songbirds
Physiological impacts of chronic and experimental Plasmodium infection on breeding-condition male songbirds Open
While Plasmodium parasitism is common in songbirds, its impact on avian reproduction is unclear owing to conflicting reports in the existing literature. Particularly understudied is the impact of phase of infection on variation in host rep…
View article: Highly variable movements by Andean Flamingos ( Phoenicoparrus andinus ): implications for conservation and management
Highly variable movements by Andean Flamingos ( Phoenicoparrus andinus ): implications for conservation and management Open
The Andean Flamingo ( Phoenicoparrus andinus ) is endemic to the central Andes Mountains, with the majority of the population distributed between Argentina, Bolivia, and Chile. It is the rarest of the six flamingo species on the planet and…
View article: Novel <i>Rickettsia</i> spp. in two common overwintering North American songbirds
Novel <i>Rickettsia</i> spp. in two common overwintering North American songbirds Open
American robins and dark-eyed juncos migrate across North America and have been found to be competent hosts for some bacterial and viral pathogens, but their contributions to arthropod-borne diseases more broadly remain poorly characterize…
View article: Physiological impacts of chronic and experimental Plasmodium infection on breeding-condition male songbirds
Physiological impacts of chronic and experimental Plasmodium infection on breeding-condition male songbirds Open
This file contains data for an experimental inoculation project aimed at understanding physiological impacts of Plasmodium in breeding-condition songbirds. The 'readme' tab contains explanations for columns on each spreadsheet. We first co…
View article: Higher metrics of health and reproductive readiness detected in songbirds with chronic Plasmodium infections persist following experimental inoculation
Higher metrics of health and reproductive readiness detected in songbirds with chronic Plasmodium infections persist following experimental inoculation Open
These two files are the result of a manuscript titled, 'Higher metrics of health and reproductive readiness detected in songbirds with chronic Plasmodium infections persist following experimental inoculation'. We first compared metrics of …
View article: Physiological impacts of chronic and experimental Plasmodium infection on breeding-condition male songbirds
Physiological impacts of chronic and experimental Plasmodium infection on breeding-condition male songbirds Open
This file contains data for an experimental inoculation project aimed at understanding physiological impacts of Plasmodium in breeding-condition songbirds. The 'readme' tab contains explanations for columns on each spreadsheet. We first co…
View article: Songbird preen oil odour reflects haemosporidian parasite load
Songbird preen oil odour reflects haemosporidian parasite load Open
Data used for Talbott et al. 2022 Animal Behaviour (in press; anticipated publish date in June 2022). This data set includes capture data, proportion data for preen oil volatile compounds identified and quantified by GC-MS (trace values ad…
View article: Songbird preen oil odour reflects haemosporidian parasite load
Songbird preen oil odour reflects haemosporidian parasite load Open
Data used for Talbott et al. 2022 Animal Behaviour (in press; anticipated publish date in June 2022). This data set includes capture data, proportion data for preen oil volatile compounds identified and quantified by GC-MS (trace values ad…
View article: A high-quality genome assembly and annotation of the dark-eyed junco <i>Junco hyemalis</i>, a recently diversified songbird
A high-quality genome assembly and annotation of the dark-eyed junco <i>Junco hyemalis</i>, a recently diversified songbird Open
The dark-eyed junco (Junco hyemalis) is one of the most common passerines of North America, and has served as a model organism in studies related to ecophysiology, behavior, and evolutionary biology for over a century. It is composed of at…
View article: Novel <i>Rickettsia</i> spp. in two common overwintering North American songbirds
Novel <i>Rickettsia</i> spp. in two common overwintering North American songbirds Open
American robins and dark-eyed juncos migrate across North America and have been found to be competent hosts for some bacterial and viral pathogens, but their contributions to arthropod-borne diseases more broadly remain poorly characterize…
View article: The probability of being infected with haemosporidian parasites increases with host age but is not affected by experimental testosterone elevation in a wild songbird
The probability of being infected with haemosporidian parasites increases with host age but is not affected by experimental testosterone elevation in a wild songbird Open
In vertebrates, disease susceptibility often varies with age. Older individuals may be more susceptible than younger individuals due to senescent declines in immune function. Alternatively, disease susceptibility may decrease with age if o…
View article: Rapid evolutionary divergence of a songbird population following recent colonization of an anthropogenic habitat
Rapid evolutionary divergence of a songbird population following recent colonization of an anthropogenic habitat Open
Colonization of a novel environment by a few individuals can lead to rapid evolutionary change, yet evidence of the relative contributions of neutral and selective factors in promoting divergence during the early stages of colonization rem…
View article: Animal Migration: An Overview of One of Nature's Great Spectacles
Animal Migration: An Overview of One of Nature's Great Spectacles Open
The twenty-first century has witnessed an explosion in research on animal migration, in large part due to a technological revolution in tracking and remote-sensing technologies, along with advances in genomics and integrative biology. We n…
View article: Local adaptation from afar: migratory bird populations diverge in the initiation of reproductive timing while wintering in sympatry
Local adaptation from afar: migratory bird populations diverge in the initiation of reproductive timing while wintering in sympatry Open
The initiation of reproduction in many seasonally breeding animals is controlled by photoperiod and tends to be clinal: populations at higher latitudes breed later than those at lower latitudes, often reflecting a higher photoperiodic thre…
View article: Comparative proteomics reveals molecular correlates of population-level variation in reproductive timing in a North American songbird
Comparative proteomics reveals molecular correlates of population-level variation in reproductive timing in a North American songbird Open
Individuals and populations time annual events such as migration and reproduction to match favorable times in their environment. Physiological preparations for reproduction rely on predictive cues such as day length to accurately time repr…
View article: Artificial light at night amplifies seasonal relapse of haemosporidian parasites in a widespread songbird
Artificial light at night amplifies seasonal relapse of haemosporidian parasites in a widespread songbird Open
Urban habitats can shape interactions between hosts and parasites by altering not only exposure rates but also within-host processes. Artificial light at night is common in urban environments, and chronic exposure can impair host immunity …
View article: Exposure to artificial light at night accelerates but does not override latitude-dependent seasonal reproductive response in dark-eyed juncos
Exposure to artificial light at night accelerates but does not override latitude-dependent seasonal reproductive response in dark-eyed juncos Open
In the modern era of industrialization, illuminated nights have become a common defining feature of human-occupied environments, particularly cities. Artificial light at night (ALAN) imposes several known negative impacts on the neuroendoc…
View article: Reactivation of latent infections with migration shapes population-level disease dynamics
Reactivation of latent infections with migration shapes population-level disease dynamics Open
Annual migration is common across animal taxa and can dramatically shape the spatial and temporal patterns of infectious disease. Although migration can decrease infection prevalence in some contexts, these energetically costly long-distan…
View article: What Do Ecology, Evolution, and Behavior Have in Common? The Organism in the Middle
What Do Ecology, Evolution, and Behavior Have in Common? The Organism in the Middle Open
Biologists who publish in The American Naturalist are drawn to its unifying mission of covering research in the fields of ecology, evolution, behavior, and integrative biology. Presented here is one scientist's attempt to straddle these fi…
View article: Breeding at higher latitude is associated with higher photoperiod threshold and delayed reproductive development in a songbird
Breeding at higher latitude is associated with higher photoperiod threshold and delayed reproductive development in a songbird Open
Many organisms time reproduction to photoperiod, a constant from year to year. Predicting how anthropogenic change will influence future timing demands greater knowledge of the current role of photoperiod. We held two closely related bird …
View article: Supplementary material from "Local adaptation from afar: migratory bird populations diverge in the initiation of reproductive timing while wintering in sympatry"
Supplementary material from "Local adaptation from afar: migratory bird populations diverge in the initiation of reproductive timing while wintering in sympatry" Open
The initiation of reproduction in many seasonally breeding animals is controlled by photoperiod and tends to be clinal: populations at higher latitudes breed later than those at lower latitudes, often reflecting a higher photoperiodic thre…
View article: Supplementary material from "Artificial light at night amplifies seasonal relapse of haemosporidian parasites in a widespread songbird"
Supplementary material from "Artificial light at night amplifies seasonal relapse of haemosporidian parasites in a widespread songbird" Open
Urban habitats can shape interactions between hosts and parasites by altering not only exposure rates but also within-host processes. Artificial light at night (ALAN) is common in urban environments, and chronic exposure can impair host im…