Results 11 to 20 of about 7,257 (176)
Tolerance and reward equity predict cooperation in ravens (Corvus corax) [PDF]
Scientific Reports, 2015 AbstractCooperative decision rules have so far been shown experimentally mainly in mammal species that have variable and complex social networks. However, these traits should not necessarily be restricted to mammals. Therefore, we tested cooperative problem solving in ravens.
Massen, Jorg J. M. +2 more
openaire +4 more sources
Short-term observational spatial memory in Jackdaws (Corvus monedula) and Ravens (Corvus corax) [PDF]
Animal Cognition, 2008 Observational spatial memory (OSM) refers to the ability of remembering food caches made by other individuals, enabling observers to find and pilfer the others' caches. Within birds, OSM has only been demonstrated in corvids, with more social species such as Mexican jays (Aphelocoma ultramarine) showing a higher accuracy of finding conspecific' caches ...
Scheid, Cristelle, Bugnyar, Thomas
openaire +3 more sources
Seroprevalence and Risk Analysis of Toxoplasma Gondii in Wild Birds of District Lahore Punjab, Pakistan [PDF]
Veterinary Medicine and Science, Volume 12, Issue 3, May 2026.This study found that over 10% of wild birds in Lahore, Pakistan, carry antibodies for Toxoplasma gondii, a parasite that can cause serious illness in humans and animals. Birds like lapwings and silver bills showed especially high antibody rates. Improved monitoring is needed to better understand risk dynamics in Pakistan.
Shahzad Ali +7 more
wiley +2 more sources
New perspectives in gaze sensitivity research. [PDF]
, 2015 Attending to where others are looking is thought to be of great adaptive benefit for animals when avoiding predators and interacting with group members.
Clayton, Nicola S, Davidson, Gabrielle L
core +6 more sources
International Journal of Osteoarchaeology, EarlyView.ABSTRACT The golden eagle (Aquila chrysaetos) nests in rock cavities where it accumulates prey bone remains during the breeding season. Because nests can be reoccupied from year to year, these faunal elements can form remarkable bone accumulations and, in the sub‐fossil record, be mixed with assemblages derived from human or other predator activities ...
Juliette Ripond +5 more
wiley +1 more source
Wildlife Biology, EarlyView.Predation by pine martens Martes martes and red foxes Vulpes vulpes is an important factor influencing the population dynamics of capercaillie Tetrao urogallus. However, there is a knowledge gap regarding the relative effects of these mesopredators on the reproductive success of capercaillie. To better understand how various landscape factors influence
Siow Yan Jennifer Angoh +4 more
wiley +1 more source
Some black-and-white facts about the Faeroese whitespeckled Common Raven Corvus corax varius. [PDF]
, 2014 The file attached is the accepted version of the ...
Van Grouw, H
core
Social information about others' affective states in a human‐altered world
Journal of Animal Ecology, EarlyView.Faced with anthropogenic change, animals now encounter challenges different from their evolutionary past. To cope with such challenges, animals may use social information about others' affective states to guide their decisions. Considering affective states of wild animals could have important implications for animal welfare and wildlife conservation ...
Luca G. Hahn +4 more
wiley +1 more source
Prehistoric bird and egg shell remains from the village Sulze near Erfurt/Thuringia [PDF]
, 2008 Prähistorische Eierschalenfragmente der Fundstelle Sulze bei Erfurt in Thüringen werden beschrieben und diskutiert. Die folgenden Arten werden nachgewiesen: Cygnus olor, Anser anser, Anas platyrhynchos und Gallus gallus forma domestica. Auf der Grundlage
Karl, Hans-Volker +2 more
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Food calling in wild ravens (Corvus corax) revisited: Who is addressed? [PDF]
Ethology, 2019 AbstractNumerous birds and mammals use vocal signals to advertise feeding opportunities but often such signals vary with individual and contextual factors. Non‐breeding ravens call at food that is difficult to access, resulting in the attraction of nearby conspecifics. Although callers may benefit from group formation in various ways, we recently found
Sierro, Javier +4 more
openaire +5 more sources