A quartet of orphaned crows raised by a veterinarian and her family still visit their adoptive clan to say "Hello" -- literally.

A video going viral online explains that the four young crows had fallen from their nest and were turned over to a veterinarian named Kristy to raise with her family.

The video says the crows were all initially called Fred, but their names were later individualized to Baby Fred, Russell Crow, Adventure Fred and Crow Magnon.

The family introduced the intelligent birds to berries and worms in the hopes they would one day be released into the wild.

The birds, which have an intelligence on par with chimpanzees, learned to say "hello" from the family.

The crows grew independent and were eventually accepted into a family of wild crows, but Kristy and her family said the Freds still make visits to their home to say "Hello."