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- Larus glaucescens (4)
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- Diurnal distribution (2)
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- Glaucous-winged Gulls (2)
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Articles 1 - 24 of 24
Full-Text Articles in Ornithology
Gain-Of-Function Polymorphisms In Human Inflammasomes: Implications For Cystic Fibrosis, Duane Jeansonne, Samithamby Jeyaseelan
Gain-Of-Function Polymorphisms In Human Inflammasomes: Implications For Cystic Fibrosis, Duane Jeansonne, Samithamby Jeyaseelan
Faculty Publications
No abstract provided.
Artificial Intelligence And Covid-19: Deep Learning Approaches For Diagnosis And Treatment, M. B. Jamshidi, A. Lalbakhsh, J. Talla, Z. Peroutka, F. Hadjilooei, P Lalbakhsh, M. Jamshidi, L. La Spada, M. Mirmozafari, M. Dehghani, A. Sabet, Sa. Roshani, So. Roshani, N. Bayat-Makou, B. Mohamadzade, Z. Malek, A. Jamshidi, S. Kiani, H. Hashemi-Dezaki, W. Mohyuddin
Artificial Intelligence And Covid-19: Deep Learning Approaches For Diagnosis And Treatment, M. B. Jamshidi, A. Lalbakhsh, J. Talla, Z. Peroutka, F. Hadjilooei, P Lalbakhsh, M. Jamshidi, L. La Spada, M. Mirmozafari, M. Dehghani, A. Sabet, Sa. Roshani, So. Roshani, N. Bayat-Makou, B. Mohamadzade, Z. Malek, A. Jamshidi, S. Kiani, H. Hashemi-Dezaki, W. Mohyuddin
Faculty Publications
COVID-19 outbreak has put the whole world in an unprecedented difficult situation bringing life around the world to a frightening halt and claiming thousands of lives. Due to COVID-19 & x2019;s spread in 212 countries and territories and increasing numbers of infected cases and death tolls mounting to 5,212,172 and 334,915 (as of May 22 2020), it remains a real threat to the public health system. This paper renders a response to combat the virus through Artificial Intelligence (AI). Some Deep Learning (DL) methods have been illustrated to reach this goal, including Generative Adversarial Networks (GANs), Extreme Learning Machine (ELM), …
Swainson's Thrushes Do Not Show Strong Wing Selectivity Prior To Crossing The Gulf Of Mexico, Rachel T. Bolus, Robert H. Diehl, Frank R. Moore, Jill L. Deppe, Michael P. Ward, Jaclyn Smolinsky, Theodore J. Zenzal Jr.
Swainson's Thrushes Do Not Show Strong Wing Selectivity Prior To Crossing The Gulf Of Mexico, Rachel T. Bolus, Robert H. Diehl, Frank R. Moore, Jill L. Deppe, Michael P. Ward, Jaclyn Smolinsky, Theodore J. Zenzal Jr.
Faculty Publications
During long-distance fall migrations, nocturnally migrating Swainson’s Thrushes often stop on the northern Gulf of Mexico coast before flying across the Gulf. To minimize energetic costs, trans-Gulf migrants should stop over when they encounter crosswinds or headwinds, and depart with supportive tailwinds. However, time constrained migrants should be less selective, balancing costs of headwinds with benefits of continuing their migrations. To test the hypotheses that birds select supportive winds and that selectivity is mediated by seasonal time constraints, we examined whether local winds affected Swainson’s Thrushes’ arrival and departure at Ft. Morgan, Alabama, USA at annual, seasonal, and nightly time …
Time Lags Associated With Effects Of Oceanic Conditions On Seabird Breeding In The Salish Sea Region Of The Northern California Current System, Rashida S. Smith, Lynelle M. Weldon, James L. Hayward, Shandelle M. Henson
Time Lags Associated With Effects Of Oceanic Conditions On Seabird Breeding In The Salish Sea Region Of The Northern California Current System, Rashida S. Smith, Lynelle M. Weldon, James L. Hayward, Shandelle M. Henson
Faculty Publications
No abstract provided.
Habitat Use And Avoidance By Foraging Red-Cockaded Woodpeckers In East Texas, John N. Macey, Brent Burt, Daniel Saenz, Richard N. Conner
Habitat Use And Avoidance By Foraging Red-Cockaded Woodpeckers In East Texas, John N. Macey, Brent Burt, Daniel Saenz, Richard N. Conner
Faculty Publications
Picoides borealis (Red-cockaded Woodpecker) is an endangered bird endemic to the Pinus (pine) ecosystems of the southeastern US. Mature pine savannahs with a minimal midstory and lush herbaceous groundcover represent high-quality habitat. This study examines the foraging-habitat patterns of Red-cockaded Woodpeckers in East Texas. We present a logistic regression model that best differentiates between foraged and non-foraged habitat. Increases in hardwood-midstory basal area have the greatest negative impact on the probability of Red-cockaded Woodpeckers selecting a habitat patch for foraging. Five additional variables negatively impact foraging probability: shrub height, diameter at breast height (DBH) of pine midstory, canopy closure, density …
Data For Henson Et Al. 2016, Shandelle Henson, James Hayward, J Cushing, Gordon Atkins, Sumiko Weir, Ashley Reichert, Wayanne Watson, Wadenerson Saint Martin, Amanda Sandler
Data For Henson Et Al. 2016, Shandelle Henson, James Hayward, J Cushing, Gordon Atkins, Sumiko Weir, Ashley Reichert, Wayanne Watson, Wadenerson Saint Martin, Amanda Sandler
Faculty Publications
These data are archived for the paper "Adaptation to short-term ENSO fluctuations may provide tipping points for populations subjected to long-term climate change" by Henson et al., submitted. Additional files: Supplementary Figure 1 | Sample plots on Violet Point, Protection Island National Wildlife Refuge, Washington, USA. The larger colony extends throughout much of the spit.
Henson Et Al Supplementary Figure 1.Pdf, Shandelle Henson
Henson Et Al Supplementary Figure 1.Pdf, Shandelle Henson
Faculty Publications
Supplementary Figure 1 | Sample plots on Violet Point, Protection Island National WildlifeRefuge, Washington, USA. The larger colony extends throughout much of the spit.
Failure Of A Heterologous Recombinant Sca5/Ompb Protein-Based Vaccine To Elicit Effective Protective Immunity Against Rickettsia Rickettsii Infections In C3h/Hen Mice, Sean P. Riley, Marissa M. Cardwell, Yvonne G. Chan, Ludovic Pruneau, Fabio Del Piero, Juan J. Martinez
Failure Of A Heterologous Recombinant Sca5/Ompb Protein-Based Vaccine To Elicit Effective Protective Immunity Against Rickettsia Rickettsii Infections In C3h/Hen Mice, Sean P. Riley, Marissa M. Cardwell, Yvonne G. Chan, Ludovic Pruneau, Fabio Del Piero, Juan J. Martinez
Faculty Publications
Spotted fever group (SFG) rickettsial species are obligate intracellular tick-borne pathogens that are responsible for important human diseases. Previous reports have demonstrated the feasibility of using recombinant surface cell antigen Sca5/OmpB to elicit protective immunity against homologous challenges using murine models of Mediterranean spotted fever and Rocky Mountain spotted fever. In addition, the feasibility of generating cross-protective immunity against related rickettsial species has also been established, but the molecular basis for these phenomena was not explored. Here, we demonstrate that vaccination of C3H/HeN mice with a recombinant OmpB domain derived from Rickettsia conorii induced high titer humoral immune responses that …
Competition And Habitat Quality Influence Age And Sex Distribution In Wintering Rusty Blackbirds, Claudia Mettke-Hofmann, Paul B. Hamel, Gerhard Hoffman, Theodore J. Zenzal Jr., Anne Pellegrini, Jennifer Malpass, Megan Garfinkel, Nathan Schiff, Russell Greenberg
Competition And Habitat Quality Influence Age And Sex Distribution In Wintering Rusty Blackbirds, Claudia Mettke-Hofmann, Paul B. Hamel, Gerhard Hoffman, Theodore J. Zenzal Jr., Anne Pellegrini, Jennifer Malpass, Megan Garfinkel, Nathan Schiff, Russell Greenberg
Faculty Publications
Bird habitat quality is often inferred from species abundance measures during the breeding and non-breeding season and used for conservation management decisions. However, during the non-breeding season age and sex classes often occupy different habitats which suggest a need for more habitat-specific data. Rusty Blackbird (Euphagus carolinus) is a forested wetland specialist wintering in bottomland hardwood forests in the south-eastern U. S. and belongs to the most steeply declining songbirds in the U.S. Little information is available to support priority birds such as the Rusty Blackbird wintering in this threatened habitat. We assessed age and sex distribution and …
Data For Sandler Et Al. 2015, Amanda Sandler, Libby Megna, James Hayward, Shandelle Henson, Cynthia Tkachuck, Richard Tkachuck
Data For Sandler Et Al. 2015, Amanda Sandler, Libby Megna, James Hayward, Shandelle Henson, Cynthia Tkachuck, Richard Tkachuck
Faculty Publications
These data are archived for the paper "Every-other-day clutch-initiation synchrony in ring-billed gulls (Larus delawarensis)" by Sandler et al., submitted
Data For Henson Et Al. 2014, Shandelle M. Henson, James L. Hayward, Gordon Atkins, Amanda Sandler, Wadenerson Saint Martin
Data For Henson Et Al. 2014, Shandelle M. Henson, James L. Hayward, Gordon Atkins, Amanda Sandler, Wadenerson Saint Martin
Faculty Publications
These data are archived for the paper "Changing sea surface temperature alters timescale of reproductive synchrony in seabirds" by Henson et al., currently submitted to Nature.
New Host And Location Record For The Bat Bug Cimex Adjunctus Barber 1939, With A Summary Of Previous Records, M. E. Grilliot, J. L. Hunt, C. G. Sims, Chris E. Comer
New Host And Location Record For The Bat Bug Cimex Adjunctus Barber 1939, With A Summary Of Previous Records, M. E. Grilliot, J. L. Hunt, C. G. Sims, Chris E. Comer
Faculty Publications
In June 2009, 14 Rafinesque’s big-eared bats (Corynorhinus rafinesquii) were collected from an abandoned house near Shepherd, San Jacinto County, Texas. Three individuals harbored bat bugs which were subsequently identified as Cimex adjunctus Barber 1939. This is the first record of this species from C. rafinesquii. In August 2013, 10 C. rafinesquii were collected from a maternity colony in Drew County in southeastern Arkansas. Four of the bats harbored bat bugs, which were identified as C. adjunctus. This is the first record of this bat bug from Arkansas. A summary of previous state and host records of the insect is …
Experimental Evidence For The Interplay Of Exogenous And Endogenous Factors On The Movement Ecology Of A Migrating Songbird, Emily B. Cohen, Frank R. Moore, Richard A. Fischer
Experimental Evidence For The Interplay Of Exogenous And Endogenous Factors On The Movement Ecology Of A Migrating Songbird, Emily B. Cohen, Frank R. Moore, Richard A. Fischer
Faculty Publications
Movement patterns during songbird migration remain poorly understood despite their expected fitness consequences in terms of survival, energetic condition and timing of migration that will carry over to subsequent phases of the annual cycle. We took an experimental approach to test hypotheses regarding the influence of habitat, energetic condition, time of season and sex on the hour-by-hour, local movement decisions of a songbird during spring stopover. To simulate arrival of nocturnal migrants at unfamiliar stopover sites, we translocated and continuously tracked migratory red-eyed vireos (Vireo olivaceus) throughout spring stopover with and without energetic reserves that were released in two replicates …
Socially Induced Ovulation Synchrony And Its Effect On Seabird Population Dynamics, Shandelle M. Henson, J. M. Cushing, James L. Hayward
Socially Induced Ovulation Synchrony And Its Effect On Seabird Population Dynamics, Shandelle M. Henson, J. M. Cushing, James L. Hayward
Faculty Publications
Spontaneous oscillator synchrony is a form of self-organization in which populations of interacting oscillators ultimately cycle together. This phenomenon occurs in a wide range of physical and biological systems. In rats and humans, oestrous/menstrual cycles synchronize through social stimulation with pheromones acting as synchronizing signals. In previous work, we showed that glaucous-winged gulls (Larus glaucescens) can lay eggs synchronously on an every-other-day schedule, and that synchrony increases with colony density. We posed a discrete-time mathematical model for reproduction during the breeding season based on the hypothesis that pre-ovulatory luteinizing hormone surges synchronize by means of visual, auditory and/or olfactory cues. …
Integrating Concepts And Technologies To Advance The Study Of Bird Migration, W. Douglas Robinson, Melissa Bowlin, Isabelle Bisson, Judy Shamoun-Barnes, Kasper Thorup, Robert H. Diehl, Thomas H. Kunz, Sarah Mabey, David W. Winkler
Integrating Concepts And Technologies To Advance The Study Of Bird Migration, W. Douglas Robinson, Melissa Bowlin, Isabelle Bisson, Judy Shamoun-Barnes, Kasper Thorup, Robert H. Diehl, Thomas H. Kunz, Sarah Mabey, David W. Winkler
Faculty Publications
Recent technological innovation has opened new avenues in migration research - for instance, by allowing individual migratory animals to be followed over great distances and long periods of time, as well as by recording physiological information. Here, we focus on how technology - specifically applied to bird migration - has advanced our knowledge of migratory connectivity, and the behavior, demography, ecology, and physiology of migrants. Anticipating the invention of new and smaller tracking devices, in addition to the ways that technologies may be combined to measure and record the behavior of migratory animals, we also summarize major conceptual questions that …
Natural Selection On Testosterone Production In A Wild Songbird Population, Joel W. Mcglothlin, Danielle J. Whittaker, Sara E. Schrock, Nicole M. Gerlach, Jodie M. Jawor, Eric A. Snajdr, Ellen D. Ketterson
Natural Selection On Testosterone Production In A Wild Songbird Population, Joel W. Mcglothlin, Danielle J. Whittaker, Sara E. Schrock, Nicole M. Gerlach, Jodie M. Jawor, Eric A. Snajdr, Ellen D. Ketterson
Faculty Publications
Because of their role in mediating life-history trade-offs, hormones are expected to be strongly associated with components of fitness; however, few studies have examined how natural selection acts on hormonal variation in the wild. In a songbird, the dark-eyed junco (Junco hyemalis), field experiments have shown that exogenous testosterone alters individuals' resolution of the survival-reproduction trade-off, enhancing reproduction at the expense of survival. Here we used standardized injections of gonadotropin-releasing hormone (GnRH) to assay variation in the testosterone production of males. Using measurements of annual survival and reproduction, we found evidence of strong natural selection acting on GnRH-induced …
Foraging-Related Activity Of Bald Eagles At A Washington Seabird Colony And Seal Rookery, James L. Hayward, Joseph G. Galusha, Shandelle M. Henson
Foraging-Related Activity Of Bald Eagles At A Washington Seabird Colony And Seal Rookery, James L. Hayward, Joseph G. Galusha, Shandelle M. Henson
Faculty Publications
From 1980 to 1998, Washington's Bald Eagle (Haliaeetus leucocephalus) population increased at an annual rate of 10. Over the same time period, foraging activity of Bald Eagles at marine bird breeding colonies also increased. From 1993 to 2008, we observed foraging-related behavior of Bald Eagles on Violet Point, Protection Island. This island hosts more than 70 of the breeding seabirds in Washington's inner seaways and serves as an important rookery for harbor seals (Phoca vitulina). We found that (1) eagles landed more frequently in seal haul-out (beach) areas than in gull-nesting (non-beach) areas of Violet Point, and that subadult eagles …
Broad-Scale Relations Between Conservation Reserve Program And Grassland Birds: Do Cover Type, Configuration And Contract Age Matter?, Sam Riffell, Daniel Scognamillo, L. Wes Burger Jr., Shawn Bucholtz
Broad-Scale Relations Between Conservation Reserve Program And Grassland Birds: Do Cover Type, Configuration And Contract Age Matter?, Sam Riffell, Daniel Scognamillo, L. Wes Burger Jr., Shawn Bucholtz
Faculty Publications
The Conservation Reserve Program (CRP) is a voluntary cropland set-aside program where environmentally-sensitive cropland is retired to a conservation practice. Grassland birds should benefit because most CRP is grass habitat and because amount of land in CRP is highest in agriculture-dominated areas of the United States where grassland habitat has been most impacted. We used the Breeding Bird Survey and Common Land Unit (CLU) data (spatially-explicit data of farm field boundaries and land cover) to identify relations between types and configurations of CRP and grassland bird abundance in 3 Midwestern states. All 13 species we studied were related to at …
Socially Induced Synchronization Of Every-Other-Day Egg Laying In A Seabird Colony, Shandelle M. Henson, James L. Hayward, J. M. Cushing, Joseph C. Galusha
Socially Induced Synchronization Of Every-Other-Day Egg Laying In A Seabird Colony, Shandelle M. Henson, James L. Hayward, J. M. Cushing, Joseph C. Galusha
Faculty Publications
Spontaneous oscillator synchrony has been documented in a wide variety of electrical, mechanical, chemical, and biological systems, including the menstrual cycles of women and estrous cycles of Norway Rats (Rattus norvegicus). In temperate regions, many colonial birds breed seasonally in a time window set by photoperiod; some studies have suggested that heightened social stimulation in denser colonies can lead to a tightened annual reproductive pulse. It has been unknown, however, whether the analog of menstrual synchrony occurs in birdsthat is, whether avian ovulation cycles can synchronize on a daily timescale within the annual breeding pulse. We report every-other-day clutch-initiation and …
Modeling The Daily Activities Of Breeding Colonial Seabirds: Dynamic Occupancy Patterns In Multiple Habitat Patches, Andrea L. Moore, Smruti P. Damania, Shandelle M. Henson, James L. Hayward
Modeling The Daily Activities Of Breeding Colonial Seabirds: Dynamic Occupancy Patterns In Multiple Habitat Patches, Andrea L. Moore, Smruti P. Damania, Shandelle M. Henson, James L. Hayward
Faculty Publications
We constructed differential equation models for the diurnal abundance and distribution of breeding glaucous-winged gulls (Larus glaucescens) as they moved among nesting and non-nesting habitat patches. We used time scale techniques to reduce the differential equations to algebraic equations and connected the models to field data. The models explained the data as a function of abiotic environmental variables with R2=0.57. A primary goal of this study is to demonstrate the utility of a methodology that can be used by ecologists and wildlife managers to understand and predict daily activity patterns in breeding seabirds.
Habitat Patch Occupancy Dynamics Of Glaucous-Winged Gulls (Larus Glaucescens) Ii: A Continuous-Time Model, Smruti P. Damania, Karl W. Phillips, Shandelle M. Henson, James L. Hayward
Habitat Patch Occupancy Dynamics Of Glaucous-Winged Gulls (Larus Glaucescens) Ii: A Continuous-Time Model, Smruti P. Damania, Karl W. Phillips, Shandelle M. Henson, James L. Hayward
Faculty Publications
The diurnal distribution and abundance dynamics of loafing Glaucous-winged Gulls (Larus glaucescens) were examined at Protection Island National Wildlife Refuge, Strait of Juan de Fuca, Washington. Asynchronous movement of gulls among three habitat patches dedicated to loafing was modeled as a function of environmental variables using differential equations. Multiple time scale analysis led to the derivation of algebraic models for habitat patch occupancy dynamics. The models were parameterized with hourly census data collected from each habitat patch, and the resulting model predictions were compared with observed census data. A four-compartment model explained 41% of the variability in the data. Models …
Habitat Patch Occupancy Dynamics Of Glaucous-Winged Gulls (Larus Glaucescens) I: A Discrete-Time Model, Karl W. Phillips, Smruti P. Damania, James L. Hayward, Shandelle M. Henson, Clara J. Logan
Habitat Patch Occupancy Dynamics Of Glaucous-Winged Gulls (Larus Glaucescens) I: A Discrete-Time Model, Karl W. Phillips, Smruti P. Damania, James L. Hayward, Shandelle M. Henson, Clara J. Logan
Faculty Publications
Diurnal habitat occupancy dynamics of Glaucous-winged Gulls were evaluated in a system of six habitats on and around Protection Island, Washington. Data were collected on the rates of gull movement between habitat patches, and from these data the probabilities of transitions between habitats were estimated as functions of tide height and time of day. A discrete-time matrix model based on the transition probabilities was used to generate habitat occupancy predictions, which were then compared to hourly census data. All model parameters were estimated directly from data rather than through model fitting. The model made reasonable predictions for two of the …
Predicting Dynamics Of Aggregate Loafing Behavior In Glaucous-Winged Gulls (Larus Glaucescens) At A Washington Colony, Shandelle M. Henson, James L. Hayward, Christina M. Burden, Clara J. Logan, Joseph G. Galusha
Predicting Dynamics Of Aggregate Loafing Behavior In Glaucous-Winged Gulls (Larus Glaucescens) At A Washington Colony, Shandelle M. Henson, James L. Hayward, Christina M. Burden, Clara J. Logan, Joseph G. Galusha
Faculty Publications
Seabirds move throughout the day in changing, patchy environments as they engage in various behaviors. We studied the diurnal abundance dynamics of Glaucous-winged Gulls (Larus glaucescens) in a habitat patch dedicated to loafing in the Strait of Juan de Fuca, Washington. We constructed three differential equation models as alternative hypotheses and then used model selection techniques to choose the one that most accurately described the system. We validated the model on an independent data set, made a priori model predictions, and conducted a field test of the predictions. Clear dynamic patterns emerged in the abundance of loafing gulls, even though …
Do Rhinoceros Auklet, Cerorhinca Monocerata, Fledglings Fly To The Sea From Their Natal Burrows?, James L. Hayward, Jere K. Clayburn
Do Rhinoceros Auklet, Cerorhinca Monocerata, Fledglings Fly To The Sea From Their Natal Burrows?, James L. Hayward, Jere K. Clayburn
Faculty Publications
The mode of departure of Rhinoceros Auklet fledglings from their nest burrows has remained uncertain. Both walk-down and fly-down hypotheses have been proposed. Here we use the unique geography of Protection Island, Washington, to evaluate the fly-down hypothesis. Some fledglings raised on Protection Island do appear to walk to the water, but our results suggest that many of the island's fledgling Rhinoceros Auklets fly to the sea.