"Anna," he said, "there's no time to lose; get your things; quit this job; come with me." He stopped anything she had to say. They were married in the next hour. An hour after that they were on the way to the planet whose existence Anna still doubted. There was little room for doubt when that spot of entrancing green in an ocean of black was sighted. "It's beautiful," Anna breathed, squeezing his hand. "But what's the rush to get here?" He explained without rancor. "Your lack of faith in me cost us far too much time. This is a new breed of chicken; they propagate vigorously. But they have no natural enemies. Every living thing needs a natural enemy. Our Plymouths have probably overrun the planet." She gurgled, then put her hand over her mouth. He took her hand away. "Anna, dearest, laugh. Laugh as much as you please. But I have no sense of humor. This you will discover as we move through life together. I see nothing funny in this situation. Living creatures need natural enemies." When the ship landed, his meaning became obvious. Chickens flew in great squawking clouds through the air, walked and clucked in rivers at their feet. Feathers came down like heavy snow; the ground was covered with fluffy white mounds. From horizon to horizon there seemed to be little else but chicken. Anna was appalled. Harvey was planning. A slaughter would be necessary. "_We're_ their natural enemies," he explained. "Your chicken farm is ready to pay off."