Using Citizen Science And Remote Sensing Data To Model Hummingbird Migration, 2016 University of Maine
Using Citizen Science And Remote Sensing Data To Model Hummingbird Migration, Sarah R. Supp, Laura J. Graham, Frank A. La Sorte, Tina A. Cormier, Gil Bohrer, Donald Powers, Susan Wethington, Kevin Guay, Patrick Jantz, Scott Goetz, Catherine H. Graham
Annual Symposium on Biomathematics and Ecology: Education and Research
No abstract provided.
The North American Sea Ducks: Their Biology And Behavior, 2016 University of Nebraska-Lincoln
The North American Sea Ducks: Their Biology And Behavior, Paul A. Johnsgard
The 21 species of sea ducks are one of the larger subgroups (Tribe Mergini) of the waterfowl family Anatidae, and the 16 species (one historically extinct) that are native to North America represent the largest number to be found on any continent, and also the largest number of endemic sea duck species native to any continent.
Although generally not important as game birds, the sea ducks include some economically important birds such as the eiders, the basis for the Arctic eiderdown industry and a historically important food source for some Native American cultures. They also include what is probably the ...
Patterns Of Fecal Progestagens, Estrogens, And Androgens Associated With Reproduction In Blue-Throated Piping Guans (Pipile Cumanensis), 2016 Washington University in St Louis
Patterns Of Fecal Progestagens, Estrogens, And Androgens Associated With Reproduction In Blue-Throated Piping Guans (Pipile Cumanensis), Leslie Ann Sterling, Helen Clawitter, Corinne P. Kozlowski, Michael Macek, Anne Tieber
Undergraduate Research Symposium Posters
While fecal hormone analyses are routinely employed to monitor reproduction in mammals, few studies have used these techniques for monitoring reproductive events in birds. This study describes the endocrine patterns associated with reproduction in the blue-throated piping guan (Pipile cumanensis), a less threatened relative of the critically endangered Trinidad piping guan (P. pipile). Fecal samples were collected approximately once a week for 3 years from seven female guans and six male guans at the Saint Louis Zoo. Concentrations of fecal progestagens, estrogens, and androgens were quantified using commercially available enzyme immunoassays. Baseline progestagen concentrations for females ranged from 1.2 ...
Behavioral Ecology Of Landbird Migrants In A Complex And Changing Flyway System: The Gulf Of Maine, 2016 University of Maine
Behavioral Ecology Of Landbird Migrants In A Complex And Changing Flyway System: The Gulf Of Maine, Adrienne J. Leppold
Electronic Theses and Dissertations
In and around the Gulf of Maine, over 300 species of birds have been documented during migration, and tens of millions of songbirds may pass through the region on a single autumn night. Shorelines are widely documented as major migration corridors. There is ample evidence that coastal areas concentrate migrants and many species make overwater movements to and from breeding and wintering grounds. Data collected from radar, banding, and ceilometry studies in the northeast have provided us with evidence that birds migrate along the coast and make overwater movements across the Gulf of Maine and Bay of Fundy during both ...
The Role Of Habitat Shaping Motion Detection In Two Songbirds, 2016 Universidad de Los Andes - Colombia
The Role Of Habitat Shaping Motion Detection In Two Songbirds, Elena A. Ritschard, Luke P. Tyrrell, Esteban Fernández-Juricic
The Summer Undergraduate Research Fellowship (SURF) Symposium
Double cones of birds are photoreceptors associated with motion perception, and perceiving motion is highly important to detect predators. Predation risks varies between habitats and may impose selective pressures that could affect organisms’ traits. There is evidence that birds show interspecific variations in visual system properties, such as the photoreceptor densities (single and double cones) and distribution across the retina. However, little is known about the relationship between the distribution of double cones and predator scanning strategies in birds living in different habitats. The goal of this study was to compare double cones distributions of birds that live in open ...
Breeding Season Avian Community Composition And Prey Availability In Eucalyptus And Slash Pine Plantations Of Southwestern Louisiana, 2016 Stephen F. Austin State University
Breeding Season Avian Community Composition And Prey Availability In Eucalyptus And Slash Pine Plantations Of Southwestern Louisiana, Elizabeth J. Messick
Electronic Theses and Dissertations
The increased demand for wood products related to industries such as bioenergy and paper has resulted in a need for a consistent supply of raw materials. Eucalyptus (Eucalyptus spp.) plantations have the potential to boost wood production for pulpwood and biomass feedstocks. Species characteristics such as rapid, indeterminate growth, coppice regrowth, resistance to disease and insects, and tolerance of a range of environmental conditions make these species successful short-rotation woody crops (SRWCs). Camden white gum (Eucalyptus benthamii), a more cold tolerant species, has made management of eucalyptus plantations viable in southern portions of the United States such as the Western ...
Temporal And Seasonal Variation Of Predator Visitation To Exclosed Piping Plover (Charadrius Melodus) Nests At Jones Beach State Park, New York, 2016 SUNY College of Environmental Science and Forestry
Temporal And Seasonal Variation Of Predator Visitation To Exclosed Piping Plover (Charadrius Melodus) Nests At Jones Beach State Park, New York, Alicia Protus
Significant resources have been spent attempting to manage predators of the threatened piping plover (Charadrius melodus). Various nest predator species are active throughout the day and night while monitoring staff that might deter predators are usually present only during select hours of the day. Monitoring efforts are also uniform throughout the nesting season, while predator activity may not be. The purpose of this study was to identify potential critical periods throughout the 24-hr cycle and the breeding season of the piping plover to allow for more targeted allocation of resources for monitoring nest predators. Camera traps were installed near exclosed ...
Effects Of Human Disturbance On Physiology, Behavior, And Ornamentation In The Eastern Bluebird, 2016 University of Southern Mississippi
Effects Of Human Disturbance On Physiology, Behavior, And Ornamentation In The Eastern Bluebird, Lauren Marjorie Gillespie
Overall, few studies have focused on anthropogenic disturbance on wildlife physiology. Research has typically focused on how environmentally contaminated areas or anthropogenic disturbance (e.g. noise, human activity) influences biodiversity, community structure and behavior of individual animals. However, understanding how disturbance influences some aspects of physiology can require sacrifice of the animal, prohibiting ecologically relevant measures of behavior and reproductive success. This research strives to examine covariation between testosterone (T) and corticosterone (CORT), plumage ornamentation, and behavior in two populations of eastern bluebirds (Sialia sialis) that differ in degree to which their habitat is modified by human activity.
In this ...
The Feasibility Of Using Drones To Count Songbirds, 2016 Gettysburg College
The Feasibility Of Using Drones To Count Songbirds, Andrew M. Wilson, Janine M. Barr, Megan E. Zagorski
Environmental Studies Student Conference Presentations
Point and transect counts are the most common bird survey methods, but are subject to biases and accessibility issues. To eliminate some of these biases, we propose attaching a recorder to a consumer-grade quadcopter (Unmanned Aerial Vehicle, or UAV) to estimate songbird populations from audio recordings. We conducted a blind experiment using broadcast recordings to estimate the detection radius of a compact recorder attached to a UAV, and found that the detection radius did not vary significantly when the UAV was flown at elevations of 20, 40 and 60m. We field tested our system by comparing UAV-based bird counts with ...
The North American Geese: Their Biology And Behavior, 2016 University of Nebraska - Lincoln
The North American Geese: Their Biology And Behavior, Paul A. Johnsgard
The eight currently recognized species of North American geese are part of a familiar group of birds collectively called waterfowl, all of which are smaller than swans and generally larger than ducks. They include the most popular of our aquatic gamebirds, with several million shot each year by sport hunters. Our two most abundant waterfowl, the Canada goose and snow goose, have populations collectively totaling about 15 million individuals. Like swans, the lifelong pairbonding of geese, their familial care, and prolonged social attachment to their offspring are legendary. Their seasonal migratory flights sometimes span thousands of miles, and the sight ...
The Maintenance Of Phenotypic Divergence Through Sexual Selection: An Experimental Study In Barn Swallows Hirundo Rustica, 2016 University of Colorado, Boulder
The Maintenance Of Phenotypic Divergence Through Sexual Selection: An Experimental Study In Barn Swallows Hirundo Rustica, Rebecca Safran, Yoni Vortman, Brittany R. Jenkins, Joanna K. Hubbard, Matt Wilkins, Rachel J. Bradley, Arnon Lotem
Faculty Publications in the Biological Sciences
Previous studies have shown that sexual signals can rapidly diverge among closely related species. However, we lack experimental studies to demonstrate that differences in trait-associated reproductive performance maintain sexual trait differences between closely related populations, in support for a role of sexual selection in speciation. Populations of Northern Hemisphere distributed barn swallows Hirundo rustica are closely related, yet differ in two plumage-based traits: ventral color and length of the outermost tail feathers (streamers). Here we provide experimental evidence that manipulations of these traits result in different reproductive consequences in two subspecies of barn swallow: (H. r. erythrogaster in North America ...
The North American Grouse: Their Biology And Behavior, 2016 University of Nebraska-Lincoln
The North American Grouse: Their Biology And Behavior, Paul A. Johnsgard
The ten currently recognized species of grouse in North America have played an important role in America’s history, from the famous but ill-fated heath hen, a primary source of meat for the earliest New England immigrants, to the ruffed grouse, currently one of the most abundant and soughtafter upland game birds in more than 40 states and provinces. This book summarizes the ecology, reproductive biology, and social behavior of all ten of the extant North American grouse species. It also describes the current status of grouse populations, some of which are perilously close to extinction. The social behavior of ...
Hands Of The Future, Inc; Junior Nature Club; Living Schoolyards, 2016 Hands of the Future, Inc
Hands Of The Future, Inc; Junior Nature Club; Living Schoolyards, Zonda K. Bryant
Purdue P-12 Networking Summit & Poster Session
Programs to connect children to nature
Hunting Behaviors And Foraging Success Of Winter Irruptive Snowy Owls In New York, 2016 SUNY College of Environmental Science and Forestry
Hunting Behaviors And Foraging Success Of Winter Irruptive Snowy Owls In New York, Russell E. Winter
The snowy owl (Bubo scandiacus) is a charismatic raptor that exhibits irruptive movements to exploit unpredictable resources in the Arctic tundra. During irruption years, many owls migrate past the southernmost extent of their traditional wintering grounds and must adjust to entirely unfamiliar habitats. The conditions associated with these new habitats may impact aspects of snowy owl behavior, and may influence snowy owls’ abilities to adapt to their wintering grounds during irruption years. I analyzed the hunting success, hunting behaviors, and diurnal activities of winter irruptive snowy owls in New York, USA, from January-March, 2015, and assessed how environmental factors (temperature ...
Stopover Ecology Of Ruby-Throated Hummingbirds (Archilochus Colubris) During Autumn Migration, 2016 University of Southern Mississippi
Stopover Ecology Of Ruby-Throated Hummingbirds (Archilochus Colubris) During Autumn Migration, Theodore Joseph Zenzal Jr
The Ruby-throated Hummingbird (Archilochus colubris) is one of the smallest Nearctic-Neotropical migrants and the only species of hummingbird that breeds in Eastern North America, yet few studies have investigated the biology of Ruby-throated Hummingbirds when they stopover during migration. Given their small size, high metabolism, aggression, and specialized diet, hummingbirds may represent a migrant that operates on the physiological edge. Therefore it is important to understand the factors that influence their stopover as well as the decision to resume migration. Towards this end, Ruby-throated Hummingbirds were captured during autumn migration along the northern coast of the Gulf of Mexico to ...
Wintering Bald Eagle Count Trends In The Conterminous United States, 1986-2010, 2016 U.S. Army Corps of Engineers
Wintering Bald Eagle Count Trends In The Conterminous United States, 1986-2010, Wade L. Eakle, Laura Bond, Mark R. Fuller, Richard A. Fischer, Karen Steenhof
We analyzed counts from the annual Midwinter Bald Eagle Survey to examine state, regional, and national trends in counts of wintering Bald Eagles (Haliaeetus leucocephalus) within the conterminous 48 United States from 1986 to 2010. Using hierarchical mixed model methods, we report trends in counts from 11 729 surveys along 844 routes in 44 states. Nationwide Bald Eagle counts increased 0.6% per yr over the 25-yr period, compared to an estimate of 1.9% per yr from 1986 to 2000. Trend estimates for Bald Eagles were significant (P ≤ 0.05) and positive in the northeastern and northwestern U.S ...
The Evolution Of Lateralized Foot Use In Parrots: A Phylogenetic Approach, 2016 Macquarie University
The Evolution Of Lateralized Foot Use In Parrots: A Phylogenetic Approach, Culum Brown, Maria Magat
Culum Brown, Ph.D.
Cerebral lateralization refers to the division of cognitive function in either brain hemisphere and may be overtly expressed as behavioral asymmetries, such as handedness. The evolutionary history of laterality is of considerable interest due to its close link with the development of human language. Although considerable research effort has aimed at the proximate explanations of cerebral lateralization, considerably less attention has been paid to ultimate explanations. The extent to which laterality is constrained by phylogeny or shaped by ecological forces through natural selection has received little attention. Here, the foot preference of 23 species of Australian parrots was examined to ...
Fluctuating Survival Selection Explains Variation In Avian Group Size, 2016 Department of Biological Sciences, University of Tulsa
Fluctuating Survival Selection Explains Variation In Avian Group Size, Charles R. Brown, Mary Bomberger Brown, Erin A. Roche, Valerie A. O'Brien, Catherine E. Page
Papers in Natural Resources
Most animal groups vary extensively in size. Because individuals in certain sizes of groups often have higher apparent fitness than those in other groups, why wide group size variation persists in most populations remains unexplained. We used a 30-y mark– recapture study of colonially breeding cliff swallows (Petrochelidon pyrrhonota) to show that the survival advantages of different colony sizes fluctuated among years. Colony size was under both stabilizing and directional selection in different years, and reversals in the sign of directional selection regularly occurred. Directional selection was predicted in part by drought conditions: birds in larger colonies tended to be ...
Three-Dimensional Simulation For Fast Forward Flight Of A Calliope Hummingbird, 2016 Vanderbilt University
Three-Dimensional Simulation For Fast Forward Flight Of A Calliope Hummingbird, Jialei Song, Bret W. Tobalske, Don Powers, Tyson Hedrick, Haoxiang Luo
Faculty Publications - Department of Biology and Chemistry
We present a computational study of flapping-wing aerodynamics of a calliope hummingbird (Selasphorus calliope) during fast forward flight. Three-dimensional wing kinematics were incorporated into the model by extracting time-dependent wing position from high-speed videos of the bird flying in a wind tunnel at 8.3 m s−1. The advance ratio, i.e. the ratio between flight speed and average wingtip speed, is around one. An immersed-boundary method was used to simulate flow around the wings and bird body. The result shows that both downstroke and upstroke in a wingbeat cycle produce significant thrust for the bird to overcome drag ...
Pheomelanin Pigment Is Not An Indicator Of Feather Corticosterone Content In Diurnal Migratory Raptors In Idaho, 2016 Boise State University
Pheomelanin Pigment Is Not An Indicator Of Feather Corticosterone Content In Diurnal Migratory Raptors In Idaho, Christopher Porterfield
Boise State University Theses and Dissertations
In some cases, pigmentation can be used as an indicator of measures of condition. In this study, I tested the relationship between reddish pheomelanin pigmentation and the amount of corticosterone, a hormone associated with stress, sequestered in the feathers. I predicted that with higher corticosterone in feathers individuals would exhibit increased brightness and reduced saturation of pheomelanin pigments in their feathers. I collected spectral data from feathers from American Kestrels (Falco sparverius), Cooper’s Hawks (Accipiter cooperii), and Sharp-shinned Hawks (A. striatus) during migration in southwestern Idaho over two years (2010-2011). After extracting corticosterone from these same feathers, I measured ...