Two species of ravens? Nevermore, quoth the… Share this: Click to share on Facebook (Opens in new window) ...

Much later, somewhere around 440,000 to 140,000 years ago, common ravens first contacted this separate raven species again. “This is definitely an ancient speciation reversal event,” Kearns said.

Whereas ravens had only two species, at one time there were as many as six Homo species, only one of which survives today — Homo sapiens.

Three million years ago, there was one species of raven in western North America, a direct ancestor of today’s ravens. This species would gradually cleave into two, the Holarctic raven and an ...

A family of ravens have set up home on a Lincolnshire TV and radio transmitter. The birds have built a nest about a third of ...

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.

Common ravens (Corvus corax; ravens) are a behaviorally flexible nest predator of several avian species, including species of conservation concern. Movement patterns based on life history phases, ...

Coastguards have scaled the cliffs of the Calf of Man to rescue a baby raven which was trapped in hay twine for several days.

Now, as each species develops new strategies to try to outsmart the other, researchers are racing to find ways to stop the raven attacks before they begin to affect the penguin population.

Some claimed we only have ravens, ... New Mexico is home to both crows and ravens. “The primary species you’re going to find in New Mexico are the American crow and the common raven,” said ...

More humans equals more ravens equals fewer tortoises,” Shields says, in “Eco-Hack!,” a documentary short about his work, directed and produced by Brett Marty and Josh Izenberg.

Australia's five species of crows and ravens can be very difficult to distinguish from each other, especially where their territories overlap. Peter Rowland, ...