what is the difference between ravens and crows?
 The difference between ravens and crows include their size, they differ physically from one another, Ravens are larger than crows, making them the largest perching birds. Crows have a smooth texture whereas the raven has a dense and shaggy plumage particularly around the throat. The bill of the raven is also heavier than the crow's bill. The tail of the crow spreads into a fan-like structure while the tail of the raven spreads into a wedge shape. 