Learn about the differences between ravens and crows, including their sizes, beaks, calls, and—if you're lucky to witness it—their smarts.

Researchers at Columbia Engineering, led by Computer Science Professor Peter Belhumeur, have taken bird-watching to a new level. Using computer vision and machine learning techniques, they have ...

As I write this column the sun is just coming up over Spread Eagle Mountain in Keene Valley. Astronomically speaking, it is just past summer solstice time, so sunrise comes early. I am bleary still ...

In Colorado’s mountains, really big black birds are either American crows or common ravens, both of which can be found year-round throughout the state and both of which are often mistaken for ...

Both common ravens and American crows are members of the family Corvidae of which there are 19 members in North America. Two of the 19 are raven species, and four are crow species. In Montana ...

Corvus is a widely distributed genus of birds in the family Corvidae. Ranging in size from the relatively small pigeon-size jackdaws to the common raven of the Holarctic region and thick-billed ...

Ravens tend to be larger with stout, thick beaks. If you see one in the air, a raven has a pointed or wedge-like tail while a crow's tail is more fan-shaped.

Crows are birds known for their intelligence, their adaptability, and their loud, harsh "caw." They're part of the same family as ravens, jays, magpies and nutcrackers. Different crow species live ...

If you see the two species together, up close and personal, identification is easy. Ravens are about 1/3 again the size of crows. The wingspan of a raven is four feet or so, while for a crow, it’s ...

Crow or raven? New birdsnap app can help Date: May 28, 2014 Source: Columbia University School of Engineering and Applied Science Summary: Using computer vision and machine learning techniques ...