A review by psteve
Nightwings by Robert Silverberg

3.0

In the far future, mankind is separated into guilds, who all perform unique tasks. The main character is a watcher, who keeps looking for signs of an alien invasion, which is triggered by some brutal human behavior thousands of years in the future. Accompanied by a Flyer and a Changling, he travels from "Room" to "Perris" as at the first step in a pilgrimage which will occur during the alien invasion. The tale is well-told, and the main character and some others are well drawn. Still, it's clumsy in spots (as in the names of those cities), but still has a narrative pull.