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Identifying And Assessing Conflicts Between Future Development And Current Migratory Bird Habitat Around Farmington Bay, Utah, Aubin A. Douglas 2018 Utah State University

Identifying And Assessing Conflicts Between Future Development And Current Migratory Bird Habitat Around Farmington Bay, Utah, Aubin A. Douglas

All Graduate Plan B and other Reports

Every year, the Great Salt Lake (GSL) and its associated wetlands provide critical habitat for over 250 migratory bird species from both the Pacific and Central Flyways. The GSL borders the Wasatch Front, which is the fastest growing and most populous region in Utah. To support the ever-increasing working population, the government of Utah aspires to increase the robust economic growth of the region through economic incentives and development of infrastructure. As this area continues to develop, greater pressure will be placed on the surrounding natural resources, including the GSL, its wetlands, and the open space and agricultural land that ...


Haemosporidian Parasite Community In Migrating Bobolinks On The Galapagos Islands, Noah G. Perlut, Patricia G. Parker, Rosalind B. Renfrew, Maricruz Jaramillo 2018 University of New England

Haemosporidian Parasite Community In Migrating Bobolinks On The Galapagos Islands, Noah G. Perlut, Patricia G. Parker, Rosalind B. Renfrew, Maricruz Jaramillo

Environmental Studies Faculty Publications

Bobolinks (Dolichonyx oryzivorus) migrate from their breeding grounds in North America to their wintering grounds in South America during the fall each year. A small number of Bobolinks stop temporarily in Galapagos, and potentially carry parasites. On the North American breeding grounds, Bobolinks carry a least two of the four Plasmodium lineages recently detected in resident Galapagos birds. We hypothesized that Bobolinks carried these parasites to Galapagos, where they were bitten by mosquitoes that then transmitted the parasites to resident birds. The haemosporidian parasite community in 44% of the Bobolinks we captured was consistent with those on their breeding grounds ...


The Birds Of Nebraska, Paul Johnsgard 2018 University of Nebraska - Lincoln

The Birds Of Nebraska, Paul Johnsgard

Zea E-Books

This annotated list of the birds of Nebraska grew gradually out of research associated with my writing of the Birds of the Great Plains: Breeding Species and Their Distribution (Johnsgard, 1979a). It expands and updates an earlier version that was published in 2013 by the University of Nebraska–Lincoln Libraries DigitalCommons’ Zea Books (Johnsgard, 2013a). It has been updated and modified in its current revision to conform with the most recent (2017) major revision of the American Ornithologists’ Society’s Checklist of North American Birds (Chesser et al., 2017). It has also been modified in its current revision to conform ...


Plasticity Of Foraging Behaviors In Response To Diverse Environmental Conditions, Morgan Gilmour, José Castillo‐Guerrero, Abram Fleishman, Salvador Hernández‐Vázquez, Hillary Young, Scott Shaffer 2018 University of California, Santa Cruz

Plasticity Of Foraging Behaviors In Response To Diverse Environmental Conditions, Morgan Gilmour, José Castillo‐Guerrero, Abram Fleishman, Salvador Hernández‐Vázquez, Hillary Young, Scott Shaffer

Faculty Publications

Due to rapidly changing global environmental conditions, many animals are now experiencing concurrent changes in both resource availability and the foraging cues associated with finding those resources. By employing flexible, plastic foraging strategies that use different types of environmental foraging cues, animals could adapt to these novel future environments. To evaluate the extent to which such flexibility and plasticity exist, we analyzed a large dataset of a clade (Sulidae; the boobies) of widespread aerial tropical predators that feed in highly variable marine habitats. These surface foragers are typical of many ocean predators that face dynamic and patchy foraging environments and ...


Plasticity Of Foraging Behaviors In Response To Diverse Environmental Conditions, Morgan E. Gilmour, José A. Castillo‐Guerrero, Abram B. Fleishman, Salvador Hernández‐Vázquez, Hillary S. Young, Scott A. Shaffer 2018 University of California, Santa Cruz

Plasticity Of Foraging Behaviors In Response To Diverse Environmental Conditions, Morgan E. Gilmour, José A. Castillo‐Guerrero, Abram B. Fleishman, Salvador Hernández‐Vázquez, Hillary S. Young, Scott A. Shaffer

Scott A. Shaffer

Due to rapidly changing global environmental conditions, many animals are now experiencing concurrent changes in both resource availability and the foraging cues associated with finding those resources. By employing flexible, plastic foraging strategies that use different types of environmental foraging cues, animals could adapt to these novel future environments. To evaluate the extent to which such flexibility and plasticity exist, we analyzed a large dataset of a clade (Sulidae; the boobies) of widespread aerial tropical predators that feed in highly variable marine habitats. These surface foragers are typical of many ocean predators that face dynamic and patchy foraging environments and ...


Common Loons Respond Adaptively To A Black Fly That Reduces Nesting Success, Walter H. Piper, Keren B. Tischler, Andrew Reinke 2018 Chapman University

Common Loons Respond Adaptively To A Black Fly That Reduces Nesting Success, Walter H. Piper, Keren B. Tischler, Andrew Reinke

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Nesting birds must often cope with harassment from biting insects, but it is difficult to ascertain what effect such pests might have on breeding success and population dynamics. We tested the hypothesis that a black fly (Simulium annulus) that feeds on the blood of nesting Common Loons (Gavia immer) causes nest abandonment in this charismatic diving bird. In addition, we measured effects of fly-induced abandonment on a loon population, and examined potential predictors of fly abundance and nest abandonment. We also tested a second hypothesis, which holds that loon pairs that abandon a nest owing to flies should often remain ...


Paul Johnsgard: Comprehensive Vita And Bibliography, Paul A. Johnsgard 2018 University of Nebraska-Lincoln

Paul Johnsgard: Comprehensive Vita And Bibliography, Paul A. Johnsgard

Papers in Ornithology

A current curriculum vitae and comprehensive bibliography for Paul A. Johnsgard, Foundation Regents Professor Emeritus at University of Nebraska-Lincoln. Dr. Johnsgard has been the author of (at least) 83 books, 140 journal articles or chapters, 100 reviews or popular articles; the subject of 7 profile articles; and the director for 12 Ph.D. dissertations and 12 M.S. theses—all listed here. Dates covered are 1953 through 2018. Dr. Johnsgard is also an illustrator and photographer.

Updated March 2018.


The Impact Of Parental Traits, Offspring Traits, And Climate On Parental Care During The Incubation Stage In A Tropical Bird, Sarah Brannon, Corey Tarwater 2018 University of Wyoming

The Impact Of Parental Traits, Offspring Traits, And Climate On Parental Care During The Incubation Stage In A Tropical Bird, Sarah Brannon, Corey Tarwater

Honors Theses AY 17/18

Many factors could play a role in individual variation in amount and length of parental care. We studied parental care during the incubation period of the Black-capped antshrikes (Thamnophilus atrinucha) in central Panama. Our comprehensive data set allowed us to determine the impacts of parental traits (age and sex), offspring traits (time of year and age of young), and climate (rain and temperature) on variation in parental care within the species. We found that an interaction between sex and age of the adult influenced incubation behavior, while time of the year and age of young did not alter incubation. Perhaps ...


Gulls, Martin S. Lowney, Scott F. Beckerman, Scott C. Barras, Thomas W. Seamans 2018 USDA, Wildlife Services

Gulls, Martin S. Lowney, Scott F. Beckerman, Scott C. Barras, Thomas W. Seamans

Wildlife Damage Management Technical Series

Abundant gull (Figure 1) populations in North America have led to a variety of conflicts with people. Gulls cause damage at aquaculture facilities and other properties, and often collide with aircraft. Their use of structures on and near water results in excessive amounts of bird droppings on boats and docks. Their presence near outdoor dining establishments, swimming beaches, and recreational sites can lead to negative interactions with people. Large amounts of gull fecal material pollutes water and beaches resulting in drinking water contamination and swim bans. A combination of dispersal techniques, exclusion and limited lethal control may reduce damage to ...


The Effects Of Habitat Composition On Red-Headed Woodpecker (Melanerpes Erythrocephalus L.) Population Density, Kimberly Zralka 2018 Olivet Nazarene University

The Effects Of Habitat Composition On Red-Headed Woodpecker (Melanerpes Erythrocephalus L.) Population Density, Kimberly Zralka

Scholar Week 2016 - present

Declines in animal populations worldwide are of critical conservation concern. However, without an understanding of optimal habitat preference, it is often difficult to determine what factors are driving these losses. Red-headed woodpecker (Melanerpes erythrocephalus L.) populations have declined by over 70% in the last 50 years, and yet in some areas the birds seem to maintain stable populations. The aim of this study was to empirically test the effects of various habitat factors on red-headed woodpecker abundance. We were particularly interested in whether oak species (Quercus sp.) present in largely savanna environments (an endangered ecosystem in the Midwestern United States ...


Persistent Annual Migration Patterns Of A Specialist Seabird, Rachael Orben, Nobuo Kokubun, Abram Fleishman, Alexis Will, Takashi Yamamoto, Scott Shaffer, Rosana Paredes, Akinori Takahashi, Alexander Kitaysky 2018 Oregon State University

Persistent Annual Migration Patterns Of A Specialist Seabird, Rachael Orben, Nobuo Kokubun, Abram Fleishman, Alexis Will, Takashi Yamamoto, Scott Shaffer, Rosana Paredes, Akinori Takahashi, Alexander Kitaysky

Faculty Publications

Specialization can make animals vulnerable to rapid environmental changes. For long-lived seabirds, foraging specialization may make individuals especially sensitive, as climatic changes are currently occurring over the course of one lifetime. The Bering Sea is a dynamic subarctic and arctic ecosystem where windblown sea ice mediates annual productivity and subsequent pathways to upper trophic levels. Red-legged kittiwakes Rissa brevirostris are endemic surface foraging seabirds specializing on myctophid fishes during reproduction. Their degree of specialization outside the breeding season is less understood. We examined their non-breeding ecology (migration, distribution, isotopic niche) during 4 winters with varying sea ice extent. Although we ...


Persistent Annual Migration Patterns Of A Specialist Seabird, Rachael A. Orben, Nobuo Kokubun, Abram B. Fleishman, Alexis P. Will, Takashi Yamamoto, Scott A. Shaffer, Rosana Paredes, Akinori Takahashi, Alexander S. Kitaysky 2018 Oregon State University

Persistent Annual Migration Patterns Of A Specialist Seabird, Rachael A. Orben, Nobuo Kokubun, Abram B. Fleishman, Alexis P. Will, Takashi Yamamoto, Scott A. Shaffer, Rosana Paredes, Akinori Takahashi, Alexander S. Kitaysky

Scott A. Shaffer

Specialization can make animals vulnerable to rapid environmental changes. For long-lived seabirds, foraging specialization may make individuals especially sensitive, as climatic changes are currently occurring over the course of one lifetime. The Bering Sea is a dynamic subarctic and arctic ecosystem where windblown sea ice mediates annual productivity and subsequent pathways to upper trophic levels. Red-legged kittiwakes Rissa brevirostris are endemic surface foraging seabirds specializing on myctophid fishes during reproduction. Their degree of specialization outside the breeding season is less understood. We examined their non-breeding ecology (migration, distribution, isotopic niche) during 4 winters with varying sea ice extent. Although we ...


Effects Of Eggshell Coloration On Egg Cannibalism Among Glaucous-Winged Gulls, Isabelle Hwang 2018 Andrews University

Effects Of Eggshell Coloration On Egg Cannibalism Among Glaucous-Winged Gulls, Isabelle Hwang

Honors Theses

A common source of reproductive loss in gulls is egg cannibalism. At a large Glaucous-winged Gull (Larus glaucescens) colony on Protection Island, Washington, cannibalism accounts for 55% of egg loss. Because cannibalism is a form of predation and birds have a highly developed sense of vision, I hypothesized that visible light coloration of Glaucous-winged Gull eggs plays a role in determining whether they are cannibalized. I used logistic regression to test whether egg fate was related to egg brightness, specific coloration, specific spot coverage, coloration relative to the most common coloration, and spot coverage relative to the most common spot ...


A Note On The Onset Of Synchronous Egg Laying In A Seabird Behavior Model, Dorothea Gallos, Christiane Gallos 2018 Andrews University

A Note On The Onset Of Synchronous Egg Laying In A Seabird Behavior Model, Dorothea Gallos, Christiane Gallos

Honors Theses

Protection Island, Washington hosts a large colony of Glaucous-winged gulls (Larus glaucescens). These birds are known to exhibit every-other-day egg-laying synchrony in dense areas of the colony in response to egg cannibalism, which is the main source of egg loss. Here we present an equilibrium analysis of a discrete-time animal behavior model for egg laying. We use Jury Conditions to find the stability criteria for the equilibrium as a function of the colony density and show that a 2-cycle bifurcation occurs when the equilibrium loses stability. The 2-cycle pattern in egg laying becomes increasingly synchronous as the colony density increases ...


Fisheries Exploitation By Albatross Quantified With Lipid Analysis, Melinda Conners, Chandra Goetsch, Suzanne Budge, William Walker, Yoko Mitani, Daniel Costa, Scott Shaffer 2018 Chicago Zoological Society

Fisheries Exploitation By Albatross Quantified With Lipid Analysis, Melinda Conners, Chandra Goetsch, Suzanne Budge, William Walker, Yoko Mitani, Daniel Costa, Scott Shaffer

Faculty Publications

Mortality from incidental bycatch in longline fishery operations is a global threat to seabird populations, and especially so for the albatross family (Diomedeidae) in which fifteen out of twenty-two species are threatened by extinction. Despite the risks, fisheries remain attractive to many species of seabird by providing access to high-energy foods in the form of discarded fish and offal, target fish, and baited hooks. Current policy regarding fisheries management is increasingly aimed at discard reform, exemplified by a discard ban initiated in the European Union Common Fisheries Policy in 2014. While there is global agreement in the importance of minimizing ...


Fisheries Exploitation By Albatross Quantified With Lipid Analysis, Melinda G. Conners, Chandra Goetsch, Suzanne M. Budge, William A. Walker, Yoko Mitani, Daniel P. Costa, Scott A. Shaffer 2018 Chicago Zoological Society

Fisheries Exploitation By Albatross Quantified With Lipid Analysis, Melinda G. Conners, Chandra Goetsch, Suzanne M. Budge, William A. Walker, Yoko Mitani, Daniel P. Costa, Scott A. Shaffer

Scott A. Shaffer

Mortality from incidental bycatch in longline fishery operations is a global threat to seabird populations, and especially so for the albatross family (Diomedeidae) in which fifteen out of twenty-two species are threatened by extinction. Despite the risks, fisheries remain attractive to many species of seabird by providing access to high-energy foods in the form of discarded fish and offal, target fish, and baited hooks. Current policy regarding fisheries management is increasingly aimed at discard reform, exemplified by a discard ban initiated in the European Union Common Fisheries Policy in 2014. While there is global agreement in the importance of minimizing ...


Feeder Density Enhances House Finch Disease Transmission In Experimental Epidemics, Sahnzi C. Moyers, James S. Adelman, Damien R. Farine, Courtney A. Thomason, Dana M. Hawley 2018 Virginia Tech

Feeder Density Enhances House Finch Disease Transmission In Experimental Epidemics, Sahnzi C. Moyers, James S. Adelman, Damien R. Farine, Courtney A. Thomason, Dana M. Hawley

Natural Resource Ecology and Management Publications

Anthropogenic food provisioning of wildlife can alter the frequency of contacts among hosts and between hosts and environmental sources of pathogens. Despite the popularity of backyard bird feeding, few studies have addressed how feeders influence host contact rates and disease dynamics. We experimentally manipulated feeder density in replicate aviaries containing captive, pathogen-naïve, groups of house finches (Haemorhous mexicanus) and continuously tracked behaviors at feeders using radio-frequency identification devices. We then inoculated one bird per group with Mycoplasma gallisepticum (Mg), a common bacterial pathogen for which feeders are fomites of transmission, and assessed effects of feeder density on house finch behavior ...


P-09 Bifurcation Analysis Of A Discrete-Time Model For Seabird Reproduction, Dorothea Gallos 2018 Andrews University

P-09 Bifurcation Analysis Of A Discrete-Time Model For Seabird Reproduction, Dorothea Gallos

Honors Scholars & Undergraduate Research Poster Symposium Programs

Glaucous-winged gulls (Larus glaucescens) breed in a large colony on Protection Island, Washington, and are known to exhibit every-other-day egg-laying synchrony in dense areas of the colony. We present a discrete-time model for egg-laying synchrony and use Jury Conditions to find the stability of the system as a function of the crowding factor. The equilibrium loses stability when the crowding factor exceeds a critical value, and the system begins synchronous stable oscillations. We also explore the effects of synchrony in the presence of egg predation and show that synchrony can be advantageous for individuals.


P-46 A Periodic Matrix Model Of Seabird Behavior And Population Dynamics, Mykhaylo M. Malakhov, Benjamin MacDonald, Shandelle M. Henson, J. M. Cushing 2018 Andrews University

P-46 A Periodic Matrix Model Of Seabird Behavior And Population Dynamics, Mykhaylo M. Malakhov, Benjamin Macdonald, Shandelle M. Henson, J. M. Cushing

Honors Scholars & Undergraduate Research Poster Symposium Programs

Rising sea surface temperatures (SSTs) in the Pacific Northwest lead to food resource reductions for surface-feeding seabirds, and have been correlated with several marked behavioral changes. Namely, higher SSTs are associated with increased egg cannibalism and egg-laying synchrony in the colony. We study the long-term effects of climate change on population dynamics and survival by considering a simplified, cross-season model that incorporates both of these behaviors in addition to density-dependent and environmental effects. We show that cannibalism can lead to backward bifurcations and strong Allee effects, allowing the population to survive at lower resource levels than would be possible otherwise.


Bulletin No. 43: Birds Of The Connecticut College Arboretum: Eighty Years Of Change, Robert Askins 2018 Connecticut College

Bulletin No. 43: Birds Of The Connecticut College Arboretum: Eighty Years Of Change, Robert Askins

Bulletins

No abstract provided.


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