NPR

Crows can count out loud like human toddlers — when they aren't cheating the test

Math isn't just a human thing. All kinds of animals, from African grey parrots to chimpanzees, are thought to have some kind of mathematical ability, but it can be hard to test. Now, a new study finds ...
AOL

Crows can count up to four, a new study finds

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Perhaps ...
Smithsonian Magazine

Crows Can ‘Count’ Up to Four Like Human Toddlers, Study Suggests

Scientists trained three carrion crows to produce one, two, three or four vocalizations based on various visual or auditory cues. pete beard via Flickr under CC BY 2.0 DEED Carrion crows, European ...
NPR

Crows can count vocally like toddlers, research shows

Crows can count... out loud! They do so similarly to human toddlers who are learning to tally things up. A neuroscientist trained birds to produce a number of calls in response to random visual cues.
7News Miami

Crows can count up to four, a new study finds

The crows’ counting abilities “seem to exceed the demands which survival makes for such abilities,” he wrote. Another University of Tübingen study on crows’ counting abilities from September 2015 ...