White Crow!

Black crows are common bird everywhere; Black elephants are common in the forest; But can you find white crow anywhere? Or can you find white elephant anywhere? Is it possible to distinguish between birds Like the common crow and Nightingale? Both are of the same colour more or less But their voices show them in true colours! How can common and superior varieties In birds or other species be found anywhere? Nightingale being superior lays its eggs In the nest of crows to grow its siblings! Likewise white crow is called a rare species But not actually ever found among black crows!