Results 131 to 140 of about 7,257 (176)

Необычное кормовое поведение ворона Corvus corax

Русский орнитологический журнал, 2016
openaire   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Raven – Corvus Corax Principalis Sanguis

Homopathic Links, 2009
From three cases, a unified picture emerges of Corvus corax principalis sanguis, the remedy prepared from Raven's blood, and this picture confirms Greg Bedayn's proving. The presence of neurological pathology seems notable, as do themes related to depression, grief and death.
exaly   +2 more sources

Molecular analysis of blood-associated pathogens in common ravens (Corvus corax) from Germany [PDF]

Parasitology Research
Aline Lamien-Meda, Maria Sophia Unterkofler, Mike Heddergott   +2 more
exaly   +2 more sources

Prevalence and diversity of helminths in three corvid species (Coloeus monedula (Linnaeus, 1758), Garrulus glandarius (Linnaeus, 1758), and Corvus corax (Linnaeus, 1758) from Türkiye [PDF]

BMC Veterinary Research
Ahmet Onur Girisgin
exaly   +2 more sources

Social learning in common ravens,Corvus corax

Animal Behaviour, 1999
We conducted an experiment to investigate whether the presence of a conspecific model can promote the acquisition of a motor task in common ravens. For this purpose, dyads, either of control birds or of model-observer pairings, were allowed to operate together in an arena with a set of identical boxes.
Fritz, Johannes, Kotrschal, Kurt
openaire   +3 more sources

Olfactory acuity in the common raven (Corvus corax)

Physiology & Behavior, 1986
The efficacy with which ravens can locate concealed carrion and similar foods has been noted from antiquity. This ability has been claimed in folklore to indicate an acute sense of smell. Contemporary opinion among ornithologists is that the sense of smell is weak at best in passerines, and particularly so in corvids which lack developed olfactory ...
A E, Harriman, R H, Berger
openaire   +2 more sources

The ontogeny of caching in ravens, Corvus corax

Animal Behaviour, 2007
Ravens scavenging on carcasses devote much of their time to carrying off loads of food for temporary storage in caches. Ways of reducing conspecific pilfering of these caches include camouflaging caches with debris and positioning caches at a distance from and/or out of sight of potential competitors.
Bugnyar, Thomas, Stöwe, Mareike, Heinrich, Bernd   +2 more
openaire   +2 more sources

Serial reversal in ravens (Corvus corax)

2022
Lernflexibilität wurde früher mit ontogenetischen und sozialen Faktoren in Verbindung gebracht, welche es Tieren erlaubt sich zu adaptieren und ihre Überlebenschance zu steigern. Die kognitiven Voraussetzungen und die damit einhergehenden Fähigkeiten zu verstehen, sind jedoch oft schwer von assoziativen Alternativen zu unterscheiden.
openaire   +1 more source

Corvus corax (Raven) 2n = 78

1973
The karyotypes shown were prepared from feather pulp. Specimens were obtained from the Como Zoo, St. Paul, Minnesota.
Maria Luiza Beçak, Willy Beçak, Franklin L. Roberts, Robert N. Shoffner, E. Peter Volpe   +4 more
openaire   +1 more source