Excerpt from Oryx and Crake, by Margaret Atwood:

“This is the latest,” said Crake.

What they were looking at was a large bulblike object that seemed to be covered with stippled whitish-yellow skin. Out of it came twenty thick fleshy tubes, and at the end of each tube another bulb was growing.

“What the hell is it?” said Jimmy.

“Those are chickens,” said Crake. "Chicken parts. Just the breasts, on this one. They’ve got ones that specialize in drumsticks too, twelve to a growth unit.

“But there aren’t any heads…”

“That’s the head in the middle,” said the woman. “There’s a mouth opening at the top, they dump nutrients in there. No eyes or beak or anything, they don’t need those.”