Common Raven - Wikipedia The common raven (Corvus corax), also known as the northern raven, is a large all-black passerine bird. Found across the Northern Hemisphere, it is the most widely distributed of all corvids.There are at least eight subspecies with little variation in appearance, although recent research has demonstrated significant genetic differences among populations from various regions. Common Raven | American Bird Conservancy Captive Common Ravens have been kept at the England's Tower of London since the 17 th century; legend says that if the birds ever leave the tower, the British Empire will fall. It seems that almost anywhere the Common Raven is found, people attribute special powers to it.
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