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 ...

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

Even knowing these field identification clues, at a distance I have a tough time deciding if it’s a crow or a raven. The best way to tell them apart is to hear their call. Crows mostly stick to their ...

The mournful caw of a crow is part of Australia's bush soundtrack. But is it the sound of a crow or in fact a raven? It depends on where in Australia you are. Here are some tips on identifying ...

It’s easy to confuse crows and ravens because both are solid black and as goth as the night is long—but a few characteristics give their identities away.

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 ...

NEW MEXICO (KRQE) – Recently on social media, New Mexico residents were debating on whether or not there are crows or ravens in the state. Some claimed we only have ravens, others claimed we ...

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 ...

The usual “caaw, caaw” call of the American crow also helps in identification as the raven makes a “croaking” call and the fish crow (a smaller bird) makes a nasal sounding “cah." ...

Crows and ravens may look similar, but they have distinct differences. Ravens are larger with chunkier beaks, longer shaggy feathers on their necks, deeper croaks, and more acrobatic flight ...

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 ...