Results 71 to 80 of about 8,685 (205)

Spring migration of Blackpoll Warblers across North America

Avian Conservation and Ecology, 2020
The awe-inspiring seasonal migrations of birds between breeding and wintering grounds has long attracted the interest of casual naturalists and professional ornithologists alike. Although new technologies improve our ability to follow individual migrants
Kristen M. Covino, Sara R. Morris, Mark Shieldcastle, Philip D. Taylor   +3 more
doaj  

Evaluation of an automated recording device for monitoring forest birds

Wildlife Society Bulletin, 2012
Monitoring of forest songbirds via auditory detections during point surveys can be enhanced by using preprogrammed recording devices. During May–July 2008, we compared boreal forest bird surveys conducted with SM‐1 bird song recorders (Wildlife Acoustics,
Lisa A. Venier, Stephen B. Holmes, George W. Holborn, Kenneth A. Mcilwrick, Glen Brown   +4 more
doaj   +1 more source

Phylogenomics of the American robin (Turdus migratorius) reveals hidden lineages and introgression

Journal of Systematics and Evolution, EarlyView.
Phylogenomic analyses of Turdus migratorius uncover four previously unrecognized lineages, including a divergent Baja California lineage (T. m. confinis). The results reveal complex evolutionary relationships that depart from simple models of continuous divergence, supported by evidence of introgression between the Mexican lineage and its previously ...
Wendoly Rojas‐Abreu, Christen M. Bossu, Luz E. Zamudio‐Beltrán, Borja Milá, Kristen Ruegg, Blanca E. Hernández‐Baños   +5 more
wiley   +1 more source

Animal Logic: Locke and the Nature of Inference

Noûs, EarlyView.
ABSTRACT Can animals reason? If so, what would their reasoning consist in, and how, if at all, would it differ from its human counterpart? On these questions, John Locke stakes out a position that also merits consideration today. I argue that, for Locke, reasoning is a matter of the subject's construing her mental states as support for a conclusion ...
Walter Ott
wiley   +1 more source

The effect of white‐tailed deer density on breeding songbirds in Delaware

Wildlife Society Bulletin, 2013
Most population goals for white‐tailed deer (Odocoileus virginianus) are based solely on deer data, with little consideration for other parts of the ecosystem. A wider ecological approach is needed for more justifiable target deer densities.
Elizabeth L. Tymkiw, Jacob L. Bowman, W. Gregory Shriver   +2 more
doaj   +1 more source

Single‐Nucleus Transcriptome Analysis Provides New Insights Into B Chromosome Elimination in Sorghum

Plant Biotechnology Journal, EarlyView.
ABSTRACT B chromosomes are supernumerary entities found in many plant species, with some exhibiting tissue‐specific elimination. In Sorghum purpureosericeum, extensive B chromosome elimination occurs during embryogenesis affecting most of the embryonic organs, leaving the B chromosome maintained mainly in limited regions of meristems.
T. Bojdová, P. Abaffy, L. Valihrach, M. Karafiátová, J. Bartoš   +4 more
wiley   +1 more source

Assessing factors associated with changes in the numbers of birds visiting gardens in winter: Are predators partly to blame?

Ecology and Evolution, 2019
The factors governing the recent declines observed in many songbirds have received much research interest, in particular whether increases of avian predators have had a negative effect on any of their prey species.
Ben Swallow, Stephen T. Buckland, Ruth King, Mike P. Toms   +3 more
doaj   +1 more source

Planted grasslands have equivalent or higher arthropod biomass than native grassland important to nesting Sprague's Pipits (Anthus spragueii) early in the breeding season

Restoration Ecology, EarlyView.
Abstract Introduction Grassland species are declining globally. Sprague's Pipit (Anthus spragueii), a native grassland‐obligate, nests in planted grasslands in some regions. How food resources in planted grassland compare with those in native grassland is important to determine the relative benefits of creating new grassland by seeding cropland with ...
David Anthony Kirk, Juan Andrés Martínez‐Lanfranco, Kimberly M. Dohms, R. Mark Brigham, Stephen K. Davis   +4 more
wiley   +1 more source

Assessing working lands as habitat for disturbance‐dependent birds using autonomous recording units

Restoration Ecology, EarlyView.
Abstract Introduction Working lands can provide habitat for declining disturbance‐dependent birds, such as Bachman's Sparrow (Peucaea aestivalis) and Northern Bobwhite (Colinus virginianus), but it remains unclear whether restoration following intensive land use (e.g. surface mining) yields habitat comparable to less intensive land uses (e.g.
Dan H. Watson, James F. Renner, Elizabeth A. Hunter   +2 more
wiley   +1 more source

The alarmingly threatened Aquatic warbler: from early ecological insights to current conservation priorities

Restoration Ecology, EarlyView.
The Aquatic warbler (Acrocephalus paludicola) is the rarest songbird of continental Europe and a fen mire specialist. The systematic drainage in the eighteenth and nineteenth centuries resulted in the loss of almost all fen mires in the breeding range. In our conservative and cautious estimate, we assume that the total historical population was around ...
Franziska Tanneberger, Karl Schulze‐Hagen   +1 more
wiley   +1 more source