Results 41 to 50 of about 666 (148)

Spatially modulated structural colour in bird feathers

Scientific Reports, 2015
Eurasian Jay (Garrulus glandarius) feathers display periodic variations in the reflected colour from white through light blue, dark blue and black. We find the structures responsible for the colour are continuous in their size and spatially controlled by
Andrew J. Parnell, Adam L. Washington, Oleksandr O. Mykhaylyk, Christopher J. Hill, Antonino Bianco, Stephanie L. Burg, Andrew J. C. Dennison, Mary Snape, Ashley J. Cadby, Andrew Smith, Sylvain Prevost, David M. Whittaker, Richard A. L. Jones, J. Patrick. A. Fairclough, Andrew R. Parker   +14 more
doaj   +1 more source

Usutu virus, Austria and Hungary, 2010–2016Usutu virus, Austria and Hungary, 2010–2016

Emerging Microbes and Infections, 2017
Usutu virus (USUV, Flaviviridae) was first reported in Europe in Austria in 2001, where it caused wild bird (mainly blackbird) mortality until 2005. Since 2006 no further USUV cases were diagnosed in the country.
Tamás Bakonyi, Károly Erdélyi, René Brunthaler, Ádám Dán, Herbert Weissenböck, Norbert Nowotny   +5 more
doaj   +1 more source

Foraging Eurasian Jays (Garrulus glandarius) prefer oaks and acorns in central Europe [PDF]

Ornis Hungarica, 2020
Abstract The Eurasian Jay (Garrulus glandarius) is considered as the most important factor in the dispersal and spread of oak species. We conducted studies in oak stands in four countries (Poland, Hungary, Romania, Ukraine) in the autumn of 2015 and 2016. To identify the preferences of Jays for both acorns and trees, we compared the size
Mitrus, Cezary, Szabo, Josif
openaire   +2 more sources

Scaling of internal joint distance in the elbow of small‐ to medium‐sized mammals: Implications for range of motion analyses

Journal of Anatomy, EarlyView.
We investigated the internal joint distances (IJDs) of the humero‐ulnar and humero‐radial joint, within a sample of 15 small‐ to medium‐sized mammals and report isometric results. We also found that joint poses had no effect on IJDs and that IJDs scale isometrically within small species.
Adrian Scheidt, Alina C. E. Renk, John A. Nyakatura   +2 more
wiley   +1 more source

Functional morphology and integration of corvid skulls – a 3D geometric morphometric approach

Frontiers in Zoology, 2009
Background Sympatric corvid species have evolved differences in nesting, habitat choice, diet and foraging. Differences in the frequency with which corvid species use their repertoire of feeding techniques is expected to covary with bill-shape and with ...
Gunz Philipp, Frahnert Sylke, Asbahr Kolja, Kulemeyer Christoph, Bairlein Franz   +4 more
doaj   +1 more source

Urban birds' detectability is affected by inter‐ and intraspecific variation in shyness

Ibis, Volume 168, Issue 2, Page 711-722, April 2026.
Detection probabilities differ between bird species as a function of their life history and ecological and behavioural traits, inevitably introducing bias in their abundance and occupancy estimates. However, the effects of behavioural traits such as species shyness and vigilance on detectability remain poorly understood.
Peter Mikula, Federico Morelli, Annette Menzel, Piotr Tryjanowski   +3 more
wiley   +1 more source

A Conceptual Framework and Methods for Studying the Connectivity of Fishes

Fish and Fisheries, Volume 27, Issue 2, Page 342-369, March 2026.
ABSTRACT Connectivity is a multifaceted concept that has important implications for the management and conservation of marine and freshwater fishes. We developed a conceptual framework that encompasses multiple, interrelated categories of connectedness, including landscape (e.g., structural, functional) connectivity and ecological (e.g., trophic ...
Jordanna N. Bergman, Jessica A. Robichaud, Jasper McCutcheon, Michael T. Booth, Brendan Campbell, Grace A. Casselberry, Cienna R. Cooper, Bronwyn M. Gillanders, Lucas P. Griffin, Edward Hale, Luc LaRochelle, Karen J. Murchie, Mary Peacock, Reid G. Swanson, Simon D. Stewart, Ryan. J. Woodland, Daniel P. Zielinski, Steven J. Cooke, Morgan L. Piczak   +18 more
wiley   +1 more source

tidypopgen: Tidy population genetics in R

Methods in Ecology and Evolution, Volume 17, Issue 2, Page 480-487, February 2026.
Abstract As genome‐wide data have become increasingly available, software libraries for their analysis have proliferated. While new tools for downstream analyses are constantly emerging, existing workflows are hindered by inefficiencies. Switching between coding languages and object types in the early stages of pipelines wastes researchers' time ...
Evelyn J. Carter, Eirlys E. Tysall, Jason A. Hodgson, Andrea Manica   +3 more
wiley   +1 more source

Erratum to: Tool-use and instrumental learning in the Eurasian jay (Garrulus glandarius) [PDF]

Animal Cognition, 2011
Fig. 1 Models of task performance given different learning heuristics. Boxes marked in white indicate tasks that would be predicted not to be passed or to take significantly longer to pass than boxes marked in black Fig. 9 Pattern of actual task performance.
Lucy G. Cheke, Christopher D. Bird, Nicola S. Clayton   +2 more
openaire   +1 more source

Does Seasonal Variation in Agility of Avian Prey Influence Body Size of Breeding Male Cooper's Hawks? And Comments on the Putative Influence of Avivory on Reproductive Output in Cities

Ecology and Evolution, Volume 16, Issue 1, January 2026.
Our findings regarding prey of breeding Cooper's Hawks in British Columbia and Wisconsin expand knowledge of their food habits and support the premise that seasonal agility of prey influences body size of nesting males. We deem it untenable to assume greater production of young at urban vs. rural nests based on proportion of avian prey use.
Robert N. Rosenfield, Andrew C. Stewart, Paul N. Frater, Eric L. Holmgren   +3 more
wiley   +1 more source