"That's not entirely true. There are owls."
"Owls?"
"Owls are continuously flying back and forth through time. It's their nature. That's why they have that short labyrinthine name: the circle, the recomplication, the straight line. It's also why they're nocturnal. Ambichronology is so much easier when nobody's looking."
This is an excerpt from the short story
"Midnight Express" by Michael Swanwick from the collection
Sirens and Other Daemon Lovers
edited by Ellen Datlow and Terri Windling,
published by HarperPrism in 1998 ISNB: 0-06-105372-4
It is not, by any means, a book for the underaged!
But if you'd like to find this erotica book, try Amazon.com.