In one experiment, Nieder said, "We trained crows to recognize different numbers. We then included trials in which no items ...

A trio of animal physiologists at the University of Tübingen, in Germany, has found that at least one species of crow has the ability to recognize geometric regularity. In their study published in the ...

Wild American crows can memorize the face of a person who threatened them, pass that knowledge to other crows across more than a kilometer, and maintain the grudge for years. Field experiments at the ...

Researchers have made startling discoveries in recent years about a crow’s ability to communicate, solve problems, remember people, and use tools. What they’re discovering about crow brains is ...

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Animal training can teach carrion crows to use a stick tool to retrieve food. With increasing practice, they not only demonstrate great skill and achieve their objective in a few steps, they also ...

Corvus splendens — Corvus meaning ‘raven’ in Latin and splendens meaning ‘shining’ or ‘brilliance’ — is a fitting name for the strikingly intelligent birds that house crows are. Crows have long ...

A crow that astonished the world by bending a straight piece of wire was simply acting out behaviour in her species' natural repertoire, a study has found. Betty bent a straight piece of garden wire ...