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Neophilia and exploration in juvenile common ravens, Corvus corax
Animal Behaviour, 1995Abstract The well-known attraction of corvid birds ot bright, shiny, inanimate objects appears to be without direct or immediate utility. Whether this attraction is an exploratory behaviour related to food finding was tested. All objects that four ravens contracted in a semi-controlled but relatively natural forest environment during 38 (usually ...
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An Experimental Investigation of Insight in Common Ravens (Corvus corax)
The Auk, 1995I presented four groups of Common Ravens (Corvus corax) with a problem that they had never encountered before. Could they demonstrate the solution to this problem without first practicing or learning the correct sequence of intermediary steps? The problem posed was the reaching of food suspended by a string.
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Possible Predation of a Western Burrowing Owl by Common Ravens
Central Valley Birds, 2017My observation of a Common Raven (Corvus corax) carrying the carcass of a Burrowing Owl (Athene cunicularia) in the San Joaquin Valley suggests the possibility that ravens may be able to prey on these small, diurnal owls. Although ravens and American Crows (Corvus brachyrhynchos) are known to take Burrowing Owl eggs and young, documented examples of ...
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Development of Abbreviated Nine-Item Forms of the Raven’s Standard Progressive Matrices Test
Assessment, 2012Warren B Bilker +2 more
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