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Articles 91 - 120 of 1402
Full-Text Articles in Ornithology
Wpa News 103 (2017), World Pheasant Association
Wpa News 103 (2017), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (Summer 2017), number 103
Published by the World Pheasant Association
Breeding Stage And Parentage Affect Tameness In Common Loons, Mina Ibrahim
Breeding Stage And Parentage Affect Tameness In Common Loons, Mina Ibrahim
Student Scholar Symposium Abstracts and Posters
Tameness is a measure of tolerance towards human disturbance. As human disturbance and recreational activity are increasing, it is becoming more and more important to understand responses of species to this disturbance. Tameness has been shown to be influenced by an individuals characteristics and life history. Two possible determinants of tameness are breeding stage and parentage. We studied tameness in common loons (Gavia immer) specifically looking at the effects of breeding stage and parentage. Tameness was measured by flight initiation distance (FID), the distance at which a loon dove from an approaching human observer in a canoe. Loons …
Wpa News 102 (2017), World Pheasant Association
Wpa News 102 (2017), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (Spring 2017), number 102
Published by the World Pheasant Association
Changes In The Breeding Range Of The Broad-Winged Hawk (Buteo Platypterus) Due To Habitat Fragmentation In The Northern Appalachian Region, Rachael M. Pruitt
Changes In The Breeding Range Of The Broad-Winged Hawk (Buteo Platypterus) Due To Habitat Fragmentation In The Northern Appalachian Region, Rachael M. Pruitt
Student Publications
The Broad-winged Hawk (BWHA), Buteo platypterus, a small, secretive hawk with distinguishing broad black tail bands, breeds in northeastern North America. The hawks nest in deciduous or mixed forest, often near water, and close to clearings or forest edges. Land conversion and fragmentation alters the landscape and reduces the area of contiguous forest used by BWHA. This study seeks to determine the habitat metrics that may be influencing the apparent breeding range declines of the BWHA at the landscape scale. Landscape characteristics and BWHA presence data from 18,684 Breeding Bird Atlas blocks (each about 25km2) from Ohio, West Virginia, Maryland, …
P24. The Birds And The Beats: Perception Of A Beat In An Avian Model, Brendon Samuels
P24. The Birds And The Beats: Perception Of A Beat In An Avian Model, Brendon Samuels
Western Research Forum
Background: Beat perception is a complex cognitive skill that enables humans to “feel” the beat in music, and is an essential component of synchronization of behavior and dance. The mechanisms in the human brain that facilitate beat perception are not entirely understood, and have only been studied thus far using non-invasive techniques. Some animals, such as songbirds, also seem to be able to detect a beat in rhythms, though this has never been formally tested independent of motor synchronization.
Methods: An operant experiment is used to assess if European starlings, a type of songbird, are capable of categorizing …
Wpa News 104 (2017), World Pheasant Association
Wpa News 104 (2017), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (Winter 2017), number 104
Published by the World Pheasant Association
Mobbing Behavior In Wild Steller's Jay (Cyanocitta Stelleri), Kelly Anne Commons
Mobbing Behavior In Wild Steller's Jay (Cyanocitta Stelleri), Kelly Anne Commons
Cal Poly Humboldt theses and projects
Mobbing is a widespread anti-predator behavior with multifaceted functions. Mobbing behavior has been found to differ with respect to many individual, group, and encounter level factors. To better understand the factors that influence mobbing behavior in wild Steller’s jays (Cyanocitta stelleri), I induced mobbing behavior using 3 predator mounts: a great horned owl (Bubo virginianus), common raven (Corvus corax), and sharp-shinned hawk (Accipiter cooperii). I observed 90 responses to mock predators by 33 color-marked individuals and found that jays varied in their attendance at mobbing trials, their alarm calling behavior, and in …
Review Of Bird Brain: An Exploration Of Avian Intelligence By Nathan Emery, Alan B. Bond
Review Of Bird Brain: An Exploration Of Avian Intelligence By Nathan Emery, Alan B. Bond
Avian Cognition Papers
Over the past 30 years, the study of bird behavior has been completely transformed by the ongoing revolution in cognitive psychology, opening up wholly new perspectives on the mental processes underlying such areas as foraging decisions, social intelligence, problem solving, memory encoding, and communication. Although these studies have contributed to a number of recent popular books, until now there has been no attempt to integrate avian cognition and recent findings in avian neuroanatomy and endocrinology into a single account that is attractive and accessible to a general readership. It is a steep challenge, but Nathan Emery has undertaken it in …
A Comparison Of Land Use And Land Cover In Public Lands Of The Northwestern Great Plains And High Plains Ecoregions And The Implications For Grassland Birds, Dawn L. Siemonsma
A Comparison Of Land Use And Land Cover In Public Lands Of The Northwestern Great Plains And High Plains Ecoregions And The Implications For Grassland Birds, Dawn L. Siemonsma
Electronic Theses and Dissertations
Loss and degradation of grassland habitat are driving forces that contribute to widespread declines of grassland birds in the United States. Many studies have evaluated habitat needs for the conservation of grassland birds, but the relative contribution of public lands in representing and maintaining avian biodiversity remains poorly understood. Having a better understanding of the role that publicly managed grasslands play in the conservation of grassland bird habitat is important for assessing the value of the investment the American public makes in these lands. Therefore, I investigated spatial relations among variations in amounts and distributions of publicly owned and managed …
Galliformes Specialist Group Annual Report 2016-2017, John P. Carroll, Simon D. Dowell
Galliformes Specialist Group Annual Report 2016-2017, John P. Carroll, Simon D. Dowell
Galliformes Specialist Group and Affiliated Societies: Reports and Other Materials
Annual report of the IUCN SSC Galliformes Specialist Group, 2017.
Guidelines For Successful Gamebird And Songbird Feeding, C. Sánchez García, Francis Buner
Guidelines For Successful Gamebird And Songbird Feeding, C. Sánchez García, Francis Buner
Galliformes Specialist Group and Affiliated Societies: Reports and Other Materials
The key points of this research are:
- We studied the use of 259 feeders by wildlife using camera traps during early and late winter in 2012 and 2013, taking over 160,000 photographs.
- We worked on three farms in southern England where pheasants, grey and red-legged partridges were present and feeding was part of the existing game management programme.
- We used a feeder model consisting of a spiral feed dispenser attached to the bottom of a drum, suspended within a cylindrical iron armature clad with wire sheep netting.
Quail 8: Proceedings Of The Eighth National Quail Symposium (July 26-28, 2017 : Knoxville, Tennessee), Thomas V. Dailey, Roger D. Applegate
Quail 8: Proceedings Of The Eighth National Quail Symposium (July 26-28, 2017 : Knoxville, Tennessee), Thomas V. Dailey, Roger D. Applegate
Galliformes Specialist Group and Affiliated Societies: Conference Proceedings
In memoriam: Robert "Bob" J. Robel, 1933-2013
PLENARY
Translocation as a population restoration technique for northern bobwhites: A review and synthesis, James A. Martin, Roger D. Applegate, Thomas V. Dailey, Michelle Downey, Beth Emmerich, Fidel Hernández, Mark M. McConnell, Kelly S. Reyna, Dale Rollins, Rebekah E. Ruzicka, and Theron M. Terhune II
A focused habitat approach for northern bobwhite restoration in Kentucky, John J. Morgan, John M. Yeiser, Danna L. Baxley, Gary Sprandel, Ben A. Robinson, and Keith Wethington
Progress of the National Bobwhite Conservation Initiative, Donald F. McKenzie, John J. Morgan, and Thomas V. Dailey
The initial stages of …
Habitat Quality Modeling For Bird Species At Furman University, Emma Cook
Habitat Quality Modeling For Bird Species At Furman University, Emma Cook
Earth and Environmental Sciences Presentations
In rapidly urbanizing areas, such as Greenville County in Upstate South Carolina, it is important to study habitat use and quality across land cover types in order to maximize conservation. Habitat fragmentation is a threat to many species of birds in areas with increasing development, especially those species that utilize larger forest patches for nesting and foraging. While land cover type and patch size are extremely important factors in determining habitat quality for birds, recent research has shown that the matrix of surrounding landscape proves to be very important as well. The landscape matrix, sometimes called landscape mosaic, considers the …
Statistical Learning In Songbirds: From Self-Tutoring To Song Culture, Olga Fehér, Iva Ljubičić, Kenta Suzuki, Kazuo Okanoya, Ofer Tchernichovski
Statistical Learning In Songbirds: From Self-Tutoring To Song Culture, Olga Fehér, Iva Ljubičić, Kenta Suzuki, Kazuo Okanoya, Ofer Tchernichovski
Publications and Research
At the onset of vocal development, both songbirds and humans produce variable vocal babbling with broadly distributed acoustic features. Over development, these vocalizations differentiate into the well-defined, categorical signals that characterize adult vocal behaviour. A broadly distributed signal is ideal for vocal exploration, that is, for matching vocal production to the statistics of the sensory input. The developmental transition to categorical signals is a gradual process during which the vocal output becomes differentiated and stable. But does it require categorical input?We trained juvenile zebra finches with playbacks of their own developing song, produced just a few moments earlier, updated continuously …
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
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 …
The Feasibility Of Using Drones To Count Songbirds, Andrew M. Wilson, Janine M. Barr, Megan E. Zagorski
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 …
Wpa News 100 (2016), World Pheasant Association
Wpa News 100 (2016), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (Summer 2016), number 100
Published by the World Pheasant Association
Wpa News 99 (2016), World Pheasant Association
Wpa News 99 (2016), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (Spring 2016), number 99
Published by the World Pheasant Association
How To Sex And Age Grey Partridges (Perdix Perdix): Identification Guide For Bird Ringers And Field Observations, Francis Buner
How To Sex And Age Grey Partridges (Perdix Perdix): Identification Guide For Bird Ringers And Field Observations, Francis Buner
Galliformes Specialist Group and Affiliated Societies: Reports and Other Materials
Key steps
To reliably sex and age grey partridges the following five features should be examined together:
- Head feathering
- Pattern in wing coverts
- Shape of primary tips
- Leg colour
- Bill colour
New Data On Feeding Ecology Of Bubo Bubo And Asio Otus (Aves: Strigidae) In Mongolia, Michael Stubbe, Nayamsuren Batsaikhan, Oliver Lindecke, Ravčigijn Samjaa, Annegret Stubbe
New Data On Feeding Ecology Of Bubo Bubo And Asio Otus (Aves: Strigidae) In Mongolia, Michael Stubbe, Nayamsuren Batsaikhan, Oliver Lindecke, Ravčigijn Samjaa, Annegret Stubbe
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
New materials of 10 Eagle owl Bubo bubo localities from Mongolia were analyzed. The feeding ecology of Long-eared owl Asio otus was studied by the investigation of pellets from 4 roosting or nesting places in S-Mongolia. All together in the prey of Bubo bubo were analyzed 1098 vertebrates (1017 mammals, 39 birds, 41 reptiles, 1 fish), involving about 22 mammal species. The pellets were dominantly those of Lagomorpha with 23.3% in SW-Mongolia, Dipodidae in W-, SW- and S-Mongolia (37.3%, 23.4%, 30.2%), Cricetidae in SW- and S-Mongolia (13.6%, 17.6%), Gerbillidae in W- and S-Mongolia (19%, 32.1%) and Arvicolidae in W- and …
Species Identification Of Golden And Bald Eagle Talons Using Morphometrics, Avery J. Appleton, R. Christopher O'Brien, Pepper W. Trail
Species Identification Of Golden And Bald Eagle Talons Using Morphometrics, Avery J. Appleton, R. Christopher O'Brien, Pepper W. Trail
Forensic Science Publications
The Golden Eagle (Aquila chrysaetos) and Bald Eagle (Haliaeetus leucocephalus) are the largest avian predators in North America, and are thus species of great ecological importance and cultural significance. There is a long history of human use of eagle body parts, and this use continues today: Bald and Golden eagles are among the North American birds most affected by the illegal wildlife trade. Detached eagle talons are often recovered in both law enforcement and archaeological contexts, but data to allow morphological identification of these talons have been lacking. This study documents measureable differences in the morphology of Bald Eagle and …
Der Mönchsgeier Aegypius Monachus (L., 1766) Und Seine Mallophagen (Insecta, Phthiraptera) In Der Mongolei = Cinereous Vulture Aegypius Monachus (L., 1766) And Its Chewing Lice (Insecta, Phthiraptera) In Mongolia, Eberhard Mey, Michael Stubbe, Davaa Lchagvasuren, Annegret Stubbe
Der Mönchsgeier Aegypius Monachus (L., 1766) Und Seine Mallophagen (Insecta, Phthiraptera) In Der Mongolei = Cinereous Vulture Aegypius Monachus (L., 1766) And Its Chewing Lice (Insecta, Phthiraptera) In Mongolia, Eberhard Mey, Michael Stubbe, Davaa Lchagvasuren, Annegret Stubbe
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
During a series of studies on the population, ecology, and biology of the Cinereous Vulture in Mongolia, fully feathered nestlings of the species from 9 nests were examined, without the use of chemical methods, for Mallophaga infestation from 2010 to 2015. The collection resulted in several first records for Mongolia of three species: Laemobothrion vulturis (J. C. FABRICIUS, 1775) sensu lato (Amblycera, Laemobothriidae), Neocolpocephalum aegypii (TENDEIRO, 1989) (Amblycera, Menoponidae s. l.) sp. inq., and Falcolipeurus quadripustulatus (BURMEISTER, 1838) (Ischnocera, Philopteridae s. l.). Despite being expected, there has still been no record of Agypoecus brevicollis (BURMEISTER, 1838) in Mongolia.
Chewing louse …
Grouse News 51-60 (2016-2020), Iucn/Ssc Galliformes Specialist Group
Grouse News 51-60 (2016-2020), Iucn/Ssc Galliformes Specialist Group
Galliformes Specialist Group and Affiliated Societies: Newsletters
Issue 51 (May 2016)
From the Editor
From the Chair of the Grouse Group and from the Galliformes Specialist Group
Research Reports
Our view: Greater sage-grouse habitat restoration: Sound science or wishful thinking?
Grouse News
Developing an Index to Sooty Grouse Abundance in Western Oregon, USA
Dusky and sharp-tailed grouse project starting near Clinton, BC addressing the effects of biosolids on grouse behavior and diet
Grouse research in North America: revisiting the forgotten forest grouse
New national survey of capercaillie in Scotland
Conferences 6th International Symposium on Galliformes 2016
The 16th NKV Congress
The 33rd IUGB and 14th Perdix Congress, …
Wpa News 101 (2016), World Pheasant Association
Wpa News 101 (2016), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (Winter 2016), number 101
Published by the World Pheasant Association
Current Status Of The Northern Saw-Whet Owl (Aegolius Acadicus) In Arkansas, Mitchell L. Pruitt, Kimberly G. Smith
Current Status Of The Northern Saw-Whet Owl (Aegolius Acadicus) In Arkansas, Mitchell L. Pruitt, Kimberly G. Smith
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
The secretive Northern Saw-whet Owl (Aegolius acadicus) is believed to be much more widespread during fall and winter than previously thought. Of the few places in the southern United States conducting research on this species, all have been successful at capturing birds. A total of 12 historic records existed for Arkansas until our work began in fall of 2014. The first confirmed record was in 1959 and the most recent, prior to this research, was in 2010. Over the course of two field seasons, we captured and banded 24 Northern Saw-whet Owls in rural Madison County. All birds were mist-netted …
Context-Dependent Seed Dispersal By A Scatter-Hoarding Corvid, Mario B. Pesendorfer, T. Scott Sillett, Scott A. Morrison, Alan C. Kamil
Context-Dependent Seed Dispersal By A Scatter-Hoarding Corvid, Mario B. Pesendorfer, T. Scott Sillett, Scott A. Morrison, Alan C. Kamil
Avian Cognition Papers
1. Corvids (crows, jays, magpies and nutcrackers) are important dispersers of large-seeded plants. Studies on captive or supplemented birds suggest that they flexibly adjust their scatter-hoarding behavior to the context of social dynamics and relative seed availability. Because many corvid-dispersed trees show high annual variation in seed production, context-dependent foraging can have strong effects on natural corvid scatter-hoarding behavior.
2. We investigated how seed availability and social dynamics affected scatter-hoarding in the island scrub jays (Aphelocoma insularis). We quantified rates of scatter-hoarding behavior and territorial defense of 26 colormarked birds over a three-year period with variable acorn crops. …
2016 International Symposium On Galliformes (Beijing, China: October 21-23, 2016): Programme And Abstracts, World Pheasant Association, China Ornithological Society
2016 International Symposium On Galliformes (Beijing, China: October 21-23, 2016): Programme And Abstracts, World Pheasant Association, China Ornithological Society
Galliformes Specialist Group and Affiliated Societies: Conference Proceedings
Evolutionary relationships among galliforms using 1000’s of unlinked loci, Rebecca Kimball
Ecology, behaviour and conservation problems in Siberian grouse Falcipennis falcipennis (Hartlaub 1855), Siegfried Klaus
Taxonomy, genetics and evolution in a highly subspecies-rich pheasant Phasianus colchicus, Yang Liu
Survey of the Blyth’s tragopan Tragopan blythii in western Myanmar, Nan Wang
Activity rhythm of green peafowl (Pavo muticus) in Konglonghe Nature Reserve based on camera-trap data, Pengfei Shan
Studies on unusual incubation behavior and embryonic tolerance of hypothermia by the Sichuan partridge (Arborophila rufipectus), Yiqiang Fu
The breeding behavior and nest selection of Sclater’s monal ( …
Territorial Defense Strategies In The Northern Cardinal (Cardinalis Cardinalis): Who Is The Bigger Threat?, Kaylee M. Gentry
Territorial Defense Strategies In The Northern Cardinal (Cardinalis Cardinalis): Who Is The Bigger Threat?, Kaylee M. Gentry
Master's Theses
This thesis examines the use of defensive strategies in relation to territories year round in the northern cardinal (Cardinalis cardinalis). Responses to recorded neighbor song and stranger song playback from the middle of a focal male’s territory were measured. This allowed for an estimation of aggression in both the winter and spring seasons. Each focal male was subjected to both treatments (stranger song and neighbor song). Males were more responsive over-all to neighbor song playback, however in the winter months, persistence of response to neighbor song playback increased. It was also shown that southeastern United States cardinals show …
Occupancy Analysis And Density Estimation Of Kori Bustards (Ardeotis Kori) And Helmeted Guineafowl (Numida Meleagris) For Use In Landscape Conservation Planning In The Northern Tuli Game Reserve, Botswana, Kathryn R. Mccollum
School of Natural Resources: Dissertations, Theses, and Student Research
For understudied species, more informed conservation planning and decision-making on both the local and landscape levels may be attained through the use of occupancy and abundance estimations. Here, we focus on two iconic bird species in eastern Botswana, kori bustards (Ardeotis kori) and helmeted guineafowl (Numida meleagris). The overall goal of this project was to better understand the hierarchy of factors that influence occupancy (ψ) and density of kori bustard and helmeted guineafowl populations within the Northern Tuli Game Reserve and how these factors may interact to affect landscape conservation and usage. We performed distance sampling …
Predicting Toucan Locations In Panama Using Arcgis, Daniel J. Herrera
Predicting Toucan Locations In Panama Using Arcgis, Daniel J. Herrera
Geography: Student Scholarship & Creative Works
Toucans are omnivorous birds native to southern Latin America and South America. They are non-migratory, and their range is disputed among experts. In an attempt to develop a better understanding of the range and behavior of toucans, correlations between toucan presence and geographic features of the area were analyzed to create a location probability map.