Nightwing
Nightwing is a fictional superhero appearing in American comic books published by DC Comics. The character has appeared in various incarnations, with the Nightwing identity most prominently being adopted by Dick Grayson when he moved on from his role as Batman's vigilante partner Robin.
Darkwing
Darkwing (known as Dusk in the United Kingdom) is a young adult fantasy novel by Canadian author Kenneth Oppel. It is the prequel and fourth book of the "Silverwing" series, and takes place 65 million years before the events of the first book. It describes the origins of the war between the birds and the beasts.