Results 121 to 130 of about 5,511 (168)

Directional tuning in the hippocampal formation of birds

Current Biology, 2021
Birds strongly rely on spatial memory and navigation. Therefore, it is of utmost interest to reveal how space is represented in the avian brain. Here we used tetrodes to record neurons from the hippocampal formation of Japanese quails-a ground-dwelling species-while the quails roamed in an open-field arena.
Ben-Yishay, E. ; https://orcid.org/0000-0003-3698-6345, Krivoruchko, K., Ron, S., Ulanovsky, N., Derdikman, D., Gutfreund, Y.   +5 more
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Birds' sense of direction

Nature, 1980
Avian Orientation and Navigation. By K. Schmidt-Koenig. Pp.180. (Academic: London and New York, 1979.) £13.80, $32.
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Direct Mortality of Birds from Anthropogenic Causes

Annual Review of Ecology, Evolution, and Systematics, 2015
Understanding and reversing the widespread population declines of birds require estimating the magnitude of all mortality sources. Numerous anthropogenic mortality sources directly kill birds. Cause-specific annual mortality in the United States varies from billions (cat predation) to hundreds of millions (building and automobile collisions), tens of ...
Loss, Scott R., Will, Tom, Marra, Peter P.   +2 more
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National Bird, directed by Sonia Kennebeck

Journal of Military Ethics, 2017
No one is fool enough to choose war instead of peace – in peace sons bury fathers, but in war fathers bury sons.
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The genetics of bird migration: stimulus, timing, and direction

Ibis, 1992
The extent to which genetic factors are directly involved in the control of bird migration and the mode of inheritance involved has been studied systematically over the past 15 years in the Blackcap Sylvia atricapilla by cross‐breeding and selective breeding. Results have also been obtained from a few experimental and field studies on Robins Eritfiacus
Berthold, P., Helbig, A.
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A direct cerebrocerebellar projection in adult birds and rats

Neuroscience, 2000
The rostral Wulst of birds, like the somatosensory cortex of mammals, receives somatosensory information from the thalamus and projects to the brainstem and spinal cord via a pyramidal-like tract. Using anterograde and retrograde tract-tracers, we show here, in adult zebra finches, that the rostral Wulst also projects directly to the cerebellar cortex ...
J M, Wild, M N, Williams
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Directional Selection and the Evolution of Breeding Date in Birds

Science, 1988
In many bird species, those pairs that breed earlier in the season have higher reproductive success than those that breed later. Since breeding date is known to be heritable, it is unclear why it does not evolve to an earlier time. Under assumptions outlined by Fisher, a model is developed that shows how breeding date may have considerable additive ...
T, Price, M, Kirkpatrick, S J, Arnold
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The European community directive on bird conservation

Biological Conservation, 1982
Abstract The Council of the European Community in 1979 adopted a directive and a resolution on bird conservation. The directive imposes legal obligations on EEC member states to take special measures to protect the habitat for migratory species and listed rare species in the most suitable areas throughout the Community. The aim is to set up a network
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Magnetoreception in birds: no intensity window in “fixed direction” responses

Naturwissenschaften, 2009
Under 502 nm turquoise light combined with 590 nm yellow light and in total darkness, European robins, Erithacus rubecula, no longer prefer their migratory direction, but exhibit so-called fixed direction responses that do not show the seasonal change between spring and autumn.
Wolfgang, Wiltschko, Lars, Dehe, Katrin, Stapput, Peter, Thalau, Roswitha, Wiltschko   +4 more
openaire   +2 more sources