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Article
Evan R. Buechley, Auteur ; Marco Girardello, Auteur ; Andrea Santangeli, Auteur ; Alazar Daka Ruffo, Auteur ; Girma Ayalew, Auteur ; Yilma D. Abebe, Auteur ; David R. Barber, Auteur ; Ralph Buij, Auteur ; Keith Bildstein, Auteur ; Bruktawit Abdu Mahamued, Auteur ; Montague H. C. Neate-Clegg, Auteur ; Darcy Ogada, Auteur ; Peter P. Marra, Auteur ; T. Scott Sillett, Auteur ; Jean-Marc Thiollay, Auteur ; Martin Wikelski, Auteur ; Peter Yaworsky, Auteur ; Çagan H. Sekercioglu, AuteurVulture populations are in severe decline across Africa and prioritization of geographic areas for their conservation is urgently needed. To do so, we compiled three independent datasets on vulture occurrence from road-surveys, GPS-tracking, and[...]
Article
Amy L. Scarpignato, Auteur ; Kristie A. Stein, Auteur ; Emily B. Cohen, Auteur ; Peter P. Marra, Auteur ; Laura J. Kearns, Auteur ; Sara Hallager, Auteur ; Christopher M. Tonra, AuteurAn understanding of the full annual cycle distributions of bird populations is a prerequisite to elucidating the drivers of differing trends among breeding populations. In the United States, Black-crowned Night-Herons (Nycticorax nycticorax) are[...]
Article
Rebecca A. McCabe, Auteur ; Laurie J. Goodrich, Auteur ; David R. Barber, Auteur ; Terry L. Master, Auteur ; Jesse L. Watson, Auteur ; Erin M. Bayne, Auteur ; Autumn-Lynn Harrison, Auteur ; Peter P. Marra, Auteur ; Keith L. Bildstein, Auteur
Article
Kenneth V. Rosenberg, Auteur ; Adriaan M. Dokter, Auteur ; Peter J. Blancher, Auteur ; John R. Sauer, Auteur ; Adam C. Smith, Auteur ; Paul A. Smith, Auteur ; Jessica C. Stanton, Auteur ; Arvind Panjabi, Auteur ; Laura Helft, Auteur ; Michael Parr, Auteur ; Peter P. Marra, AuteurBecause birds are conspicuous and easy to identify and count, reliable records of their occurrence have been gathered over many decades in many parts of the world. Drawing on such data for North America, Rosenberg et al. report wide-spread popul[...]
Article
Jessica A. Reese, Auteur ; Christopher Tonra, Auteur ; Catherine Viverette, Auteur ; Peter P. Marra, Auteur ; Lesley P. Bulluck, AuteurStable isotope analysis is often used to identify the geographic origins of migratory bird populations. While this method can accurately predict the provenance of migratory species, stable hydrogen isotope values measured in feathers (delta H-2([...]
Article
Amy L. Scarpignato, Auteur ; Autumn-Lynn Harrison, Auteur ; David J. Newstead, Auteur ; Lawrence J. Niles, Auteur ; Ronald R. Porter, Auteur ; Michael van den Tillaart, Auteur ; Peter P. Marra, AuteurSmaller bird species, including many shorebirds, are difficult to track throughout the annual cycle because of technological limitations (tag weight and accuracy) and logistical constraints (the improbability of recapturing tagged individuals). [...]
Article
Andrew G. Pillar, Auteur ; Peter P. Marra, Auteur ; Nancy J. Flood, Auteur ; Matthew W. Reudink, AuteurIn contrast to the majority of migratory songbirds in North America, which moult on or near their breeding grounds, the Bullock’s oriole (Icterus bullockii) is reported to stop during fall migration to moult en route to the wintering grounds. Th[...]
Article
Kristen L. D. Marini, Auteur ; Ann E. McKellar, Auteur ; Laurene M. Ratcliffe, Auteur ; Peter P. Marra, Auteur ; Matthew W. Reudink, AuteurPlumage colouration serves a variety of functions for birds, including conspecific signalling, crypsis, and predator–prey interactions. Though much research has been conducted on colour changes in species with delayed plumage maturation, where b[...]
Article
Frédéric Angelier, Auteur ; Carol M. Vleck, Auteur ; Rebecca L. Holberton, Auteur ; Peter P. Marra, AuteurTelomere length (TL) has been shown to be a potential predictor of survival in wild vertebrates, and, as a consequence, there is growing interest in understanding the causes of inter-individual variability in TL. In that context, developmental c[...]
Article
Kathryn M. Langin, Auteur ; Peter P. Marra, Auteur ; Zoltán Németh, Auteur ; Frank R. Moore, Auteur ; T. Kurt Kyser, Auteur ; Laurene M. Ratcliffe, AuteurEach spring, millions of songbirds migrate across the Gulf of Mexico on their way to breeding sites in North America. Data from radar and migration monitoring stations have revealed broad patterns in the spatial and temporal course of trans-Gulf[...]
Article
Ryan R. Germain, Auteur ; Matthew W. Reudink, Auteur ; Peter P. Marra, Auteur ; Laurene M. Ratcliffe, Auteur
Article
William V. DeLuca, Auteur ; Colin E. Studds, Auteur ; Ryan S. King, Auteur ; Peter P. Marra, AuteurEstuarine ecosystems are becoming increasingly altered by the concentration of human populations near the coastline, however a robust indicator of this change is lacking. We developed an index of waterbird community integrity (IWCI) and tested i[...]
Article
Nathan W. Cooper, Auteur ; Mark A. Thomas, Auteur ; Megan B. Garfinkel, Auteur ; Katherine L. Schneider, Auteur ; Peter P. Marra, AuteurDevising methods for sampling arthropods presents many challenges, including understanding possible differences in results obtained by different individuals (precision), investigating differences between estimates and the actual variable of inte[...]
Article
Scott R. Loss, Auteur ; Tom Will, Auteur ; Peter P. Marra, AuteurWind energy has emerged as a promising alternative to fossil fuels, yet the impacts of wind facilities on wildlife remain unclear. Prior studies estimate between 10,000 and 573,000 fatal bird collisions with U.S. wind turbines annually; however,[...]
Article
Luke L. Powell, Auteur ; Robert C. Dobbs, Auteur ; Peter P. Marra, AuteurInsectivorous birds may adjust their foraging strategies to exploit changes in resource distributions. Arthropod prey strongly influence habitat-specific persistence of long-distance migrant passerines in their wintering areas, and arthropods ar[...]
Article
Clark S. Rushing, Auteur ; Michele R. Dudash, Auteur ; Peter P. Marra, AuteurThe processes by which individuals select breeding sites have important consequences for individual tness as well as population- and community-dynamics. Although there is increasing evidence that many animal species use information acquired from[...]
Article
Andrew K. Davis, Auteur ; Nora E. Diggs, Auteur ; Robert J. Cooper, Auteur ; Peter P. Marra, AuteurRadio-telemetry is often used to track birds, and several investigators have examined the possible effects of radio-transmitters on birds. One approach to this question is to determine if transmitters induce physiological stress. Using hematolog[...]
Article
Frédéric Angelier, Auteur ; Christopher M. Tonra, Auteur ; Rebecca L. Holberton, Auteur ; Peter P. Marra, AuteurBaseline corticosterone levels have been suggested to be an effective tool to assess and monitor the health status of individuals and populations of wild birds. However, measuring baseline corticosterone levels in the field is difficult because [...]
Article
Christopher M. Tonra, Auteur ; Christiaan Both, Auteur ; Peter P. Marra, AuteurThe study of migratory connectivity is rapidly growing in ornithology, as is the technology used to measure it. While use of extrinsic markers, such as archival tags, is becoming more prevalent, for many small species the best tool available for[...]
Article
Nathan W. Cooper, Auteur ; Michael T. Hallworth, Auteur ; Peter P. Marra, AuteurThe importance of understanding the geographic distribution of the full annual cycle of migratory birds has been increasingly highlighted over the past several decades. However, the difficulty of tracking small birds between breeding and winteri[...]
Article
Scott R. Loss, Auteur ; Sara S. Loss, Auteur ; Tom Will, Auteur ; Peter P. Marra, AuteurA primary benefit of incorporating public participation in scientific research is the increased ability to use data from multiple localities to address conservation research and management objectives that span national, continental, and even glo[...]
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Christina M. Kennedy, Auteur ; Peter P. Marra, AuteurMaintaining animal movement in fragmented landscapes depends upon the levels of connectivity among habitat patches, which in turn may depend upon the landscape matrix. Little is known about how the matrix affects dispersal abilities, in part bec[...]
Article
Christopher M. Tonra, Auteur ; Peter P. Marra, Auteur ; Rebecca L. Holberton, AuteurIn migratory birds, the timing of departure from wintering grounds is often dependant on the quality of habitat on an individual's territory and may influence individual fitness, resulting in an interaction of life history stages across large ge[...]
Article
Matthew W. Reudink, Auteur ; Colin E. Studds, Auteur ; Peter P. Marra, Auteur ; T. Kurt Kyser, Auteur ; Laurene M. Ratcliffe, AuteurMany species of birds exhibit brilliant ornamental plumage, yet most research on the function and evolution of plumage has been confined to the breeding season. In the American redstart Setophaga ruticilla, a long-distance Neotropical-Nearctic m[...]
Article
Anne L. Balogh, Auteur ; Thomas B. Ryder, Auteur ; Peter P. Marra, AuteurUnderstanding factors that limit the productivity and survival of birds in rapidly changing human-dominated landscapes are key to managing future population persistence. To date, few studies have quantified both nest success and post-fledging su[...]
Article
A. Marm Kilpatrick, Auteur ; Ryan J. Peters, Auteur ; Alan P. Dupuis, Auteur ; Matthew J. Jones, Auteur ; Peter Daszak, Auteur ; Peter P. Marra, Auteur ; Laura D. Kramer, AuteurNumerous diseases of wildlife have recently emerged due to trade and travel. However, the impact of disease on wild animal populations has been notoriously difficult to detect and demonstrate, due to problems of attribution and the rapid disappe[...]
Article
Christopher M. Tonra, Auteur ; Kimberly Sager-Fradkin, Auteur ; Sarah A. Morley, Auteur ; Jeffrey J. Duda, Auteur ; Peter P. Marra, AuteurDam removal is increasingly being recognized as a viable river restoration action. Although the main beneficiaries of restored connectivity are often migratory fish populations, little is known regarding recovery of other parts of the freshwater[...]
Article
Michael J. Newhouse, Auteur ; Peter P. Marra, Auteur ; L. Scott Johnson, Auteur
Article
Joseph A. M. Smith, Auteur ; Leonard R. Reitsma, Auteur ; Larry L. Rockwood, Auteur ; Peter P. Marra, AuteurSeveral species of Nearctic-Neotropical migratory songbirds appear to form roosting aggregations while on their wintering grounds but little is understood about the ecology of this behavior. We studied roosting behavior and patterns of roost hab[...]
Article
Frédéric Angelier, Auteur ; Christopher M. Tonra, Auteur ; Rebecca L. Holberton, Auteur ; Peter P. Marra, AuteurIn migratory birds, environmental conditions during the stationary period of the non-breeding season are crucial to consider because they ultimately affect the fitness of individuals by influencing their subsequent migration, breeding success an[...]
