Blackbird

It had been said
"The blackbirds iridescent black plumage holds the energies of mysticism and magic. Druid legends say that the birds of Rhiannan are 3 blackbirds which sit and sing in the World tree of other worlds. Their singing puts the listener into a sleep or a trance which enables him or her to travel to the otherworld. It was said to impart mystic secrets."
All I know is they are truly beautiful.