 Why doesn't the narrator want to tell anyone about his experiments?
Yet I had always been so sure I could create them that I had been calling them volplas for ten years. I had called them volplas since the day old Nijinsky's elongated arms and his cousin's lateral skin folds had given me the idea of a flying mutant. Again in the laboratory, I entered the metabolic accelerator and withdrew the intravenous needles from my first volplas. It would be several hours before they would begin to move, to learn to feed and play, perhaps to learn to fly. Meanwhile, it was clear that here was no war of dominant mutations. Outside this little town, I found a litter of flat stones that had young black-snakes under each slab.
 He wants to sit back and watch what happens when they're released on the world
 He wants to wait until he can publish a paper about his results  He wants to sit back and watch what happens when they're released on the world  It is illegal to breed mutant animals, and doesn't want to get caught  He doesn't want people to know about his work until he has perfected the new species