Results 31 to 40 of about 35,633 (229)

Detection of Babesia odocoilei in Ixodes scapularis Ticks Collected from Songbirds in Ontario and Quebec, Canada

Pathogens, 2020
Songbirds widely disperse ticks that carry a diversity of pathogens, some of which are pathogenic to humans. Among ticks commonly removed from songbirds, the blacklegged tick, Ixodes scapularis, can harbor any combination of nine zoonotic pathogens ...
John D. Scott, Emily L. Pascoe, Muhammad S. Sajid, Janet E. Foley   +3 more
doaj   +1 more source

Bison Reintroduction to Mixed-Grass Prairie Is Associated With Increases in Bird Diversity and Cervid Occupancy in Riparian Areas

Frontiers in Ecology and Evolution, 2022
In grassland ecosystems, grazing by large herbivores is a highly influential process that affects biodiversity by modifying the vegetative environment through selective consumption.
Andy J. Boyce, Andy J. Boyce, Hila Shamon, William J. McShea   +3 more
doaj   +1 more source

Facets and Typed Relations as Tools for Reasoning Processes in Information Retrieval

, 2014
Faceted arrangement of entities and typed relations for representing different associations between the entities are established tools in knowledge representation. In this paper, a proposal is being discussed combining both tools to draw inferences along
A. Shiri, A.B. Buxton, L.M. Garshol, R. Green, V. Broughton, W. Gödert, W. Gödert   +6 more
core   +1 more source

Human infections associated with wild birds. [PDF]

, 2008
IntroductionWild birds and especially migratory species can become long-distance vectors for a wide range of microorganisms. The objective of the current paper is to summarize available literature on pathogens causing human disease that have been ...
Bauchinger, Ulf, Falagas, Matthew E, Kelesidis, Iosif, Kelesidis, Theodoros, Tsiodras, Sotirios   +4 more
core   +1 more source

Territoriality and site fidelity of an island endemic subspecies, the Bermuda White-eyed Vireo ( Vireo griseus bermudianus )

Journal of Field Ornithology
Territories are areas that contain resources and are occupied by animals that defend these areas from conspecifics and heterospecifics. Territoriality in birds, which use vocal displays to repel intruders from their territories, has been thoroughly ...
Miguel A Mejias, Benjamin Misiuk
doaj   +1 more source

The direct response of the gonads to cues of stress in a temperate songbird species is season-dependent. [PDF]

, 2013
The gonadotropin releasing hormone (GnRH) system in the hypothalamus is often considered the final point in integration of environmental cues as they pertain to the reproductive axis.
Bentley, George, Koh, Annie, McGuire, Nicolette   +2 more
core   +2 more sources

Determinants of spring migration departure dates in a New World sparrow: Weather variables reign supreme

Ecology and Evolution
Numerous factors influence the timing of spring migration in birds, yet the relative importance of intrinsic and extrinsic variables on migration initiation remains unclear.
Allison J. Byrd, Katherine M. Talbott, Tara M. Smiley, Taylor B. Verrett, Michael S. Gross, Michelle L. Hladik, Ellen D. Ketterson, Daniel J. Becker   +7 more
doaj   +1 more source

A comparative study of the function of heterospecific vocal mimicry in European passerines [PDF]

, 2007
Although heterospecific vocal imitation is well documented in passerines, the evolutionary correlates of this phenomenon are poorly known. Here, we studied interspecific variation in vocal mimicry in a comparative study of 241 European songbirds.
Anders Pape Møller, Avilés, Badyaev, Baylis, Bell, BioStat, Blondel, Burfield, Chu, Cibois, Cohen, Coleman, Cramp, Cucco, Denitza Zaprianova Pavlova, Dobkin, Dowsett-Lemaire, Ferguson, Forstmeier, Freckleton, Friedenberg, Galeotti, Garamszegi, Garamszegi, Garamszegi, Garamszegi, Garamszegi, Garamszegi, Garamszegi, Gil, Glutz von Blotzheim, Goodale, Gray, Greenlaw, Griffith, Hamao, Hartshorne, Hausberger, Hindmarsh, Hindmarsh, Hindmarsh, Iwaniuk, Jesús Miguel Avilés, Kipper, Lefebvre, Lemaire, László Zsolt Garamszegi, Marcel Eens, Martins, McCarthy, Mlíkovsky, Moran, Mullarney, Møller, Møller, Møller, Møller, Nakagawa, Nowicki, Pagel, Panov, Paradis, Randler, Read, Robinson, Sheldon, Sibley, Soler, Spottiswoode, Stattersfield, Svensson, Witherby, Zollinger   +72 more
core   +1 more source

Spatial distribution of acoustic traits in bird assemblages along regional bioclimatic gradients

Ecography, EarlyView.
Environmental variation shapes acoustic interactions among birds, creating spatial structures in the sonic signature of local species assemblages. Exploring these patterns at regional scales can reveal processes that segregate acoustic strategies along environmental gradients.
Michela Busana, Frédéric Sèbe, Luc Barbaro, Jonathan Carruthers‐ Jones, Solène Croci, Alice Eldridge, Almo Farina, Amandine Gasc, Charlène Gemard, Sylvain Haupert, Sandra Müller, Jean‐Yves Barnagaud   +11 more
wiley   +1 more source

When the sun never sets: diverse activity rhythms under continuous daylight in free-living arctic-breeding birds [PDF]

, 2013
Circadian clocks are centrally involved in the regulation of daily behavioural and physiological processes. These clocks are synchronized to the 24-hour day by external cues (Zeitgeber), the most important of which is the light-dark cycle.
Helm, B., Kempenaers, B., Spoelstra, K., Steiger, S.S., Valcu, M., Wikelski, M.   +5 more
core   +1 more source