Robo Raven: Robotic bird that harvests solar energy (w/ video)

(Phys.org) —Small robotic birds are showing lots of promise for tasks such as monitoring the environment and conducting surveillance. But one current drawback they have is the amount of time they are able to stay aloft. ...

Raven food calls disclose their age and sex

Common ravens (Corvus corax) use food associated 'haa' calls to recruit other individuals of the same species (conspecifics) to food foraging sites which may be dangerous because of predators or territorial breeding pairs. ...

Fossils show ravens lived alongside early humans in Beijing

While ravens do not occur in China's capital Beijing today, a new study analyzing fossil bird bones from the UNESCO World Heritage Zhoukoudian "Peking Man" site demonstrates that ravens lived in western Beijing at the same ...

Ravens remember relationships they had with others

In daily life we remember faces and voices of several known individuals. Similarly, mammals have been shown to remember calls and faces of known individuals after a number of years. Markus Boeckle and Thomas Bugnyar from ...

Ravens cooperate—but not with just anyone

Ravens spontaneously solve a task that requires both coordination and cooperation—an ability that so far only a handful of species like chimpanzees and elephants have proved to master. A team of researchers led by Thomas ...

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