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.
Nightwings (novella)
"Nightwings" is a science fiction novella by Robert Silverberg. It won the Hugo Award for Best Novella in 1969 and was also nominated for the Nebula Award in 1968. It won the Prix Apollo Award in 1976. "Nightwings" is the first in a trilogy of novellas, the next two being "Perris Way" (1968) and "To Jorslem" (1969). These three works were later collected into a single fixup in three sections, also titled Nightwings. According to Silverberg's introductions, the changes required to turn the three shorter works into a novel were relatively minor.