منابع مشابه
Corvid cognition
What is a corvid? There are just over 120 species of corvids, a family of songbirds that includes the crows, ravens, rooks and jackdaws, as well as the more colourful jays, magpies and nutcrackers. Although belonging to the same order as nightingales and other birds with melodious songs (Oscines), corvids tend to be identified by their raucous calls. Little is known about corvid songs, perhaps ...
متن کاملCorvid Cognition: Something to Crow About?
New research indicates that crows are capable of matching stimuli on the basis of analogical relations: that is, similarity of size, color and shape. This may be the first evidence for spontaneous analogical reasoning outside of the primate order.
متن کاملInside the corvid brain—probing the physiology of cognition in crows
categories Rather than representing each detail of a sensory stimulus, the classification of stimuli into behaviorally meaningful categories endows animals with superior behavioral flexibility. Classifying items according to their number is a particular abstract category. It allows animals to abstract from the sensory attributes of elements to arrive at the quantitative category ‘numerosity’. E...
متن کاملCorvid caching: Insights from a cognitive model.
Caching and recovery of food by corvids is well-studied, but some ambiguous results remain. To help clarify these, we built a computational cognitive model. It is inspired by similar models built for humans, and it assumes that memory strength depends on frequency and recency of use. We compared our model's behavior to that of real birds in previously published experiments. Our model successful...
متن کاملPhylogeographic patterns in widespread corvid birds.
Intraspecific genetic diversity and phylogeography of Corvus corone was investigated using the mitochondrial (mt) control region as a molecular marker. A split into two distinct mt lineages was observed. One represents individuals from a wide geographic range spanning from England to the Russian Far East (Kamchatka), while the other one was found in the Primorye and Khabarovsk regions (southern...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2005
ISSN: 0960-9822
DOI: 10.1016/j.cub.2005.01.020