How rare is an egg inside an egg?

Related questions

1. What eggs do to your body?
2. What happens if celiac disease goes untreated?
3. Does the egg diet work?
4. Is 2 eggs a day bad?
5. Can you develop an allergy to eggs later in life?
6. What are the healthiest eggs to eat?
7. Do I have egg intolerance?
8. What does a celiac attack feel like?
9. Which is the better part of an egg?
10. Is Fatty Liver serious?

Tags

1. #cause
2. #raising
3. #chickens
4. #occurs
5. #unexpected
6. #oviduct
7. #called
8. #inside
9. #peristalsis
10. #contraction
11. #counter
12. #forming
13. #though
14. #occasionally
15. #quite
16. #expect
17. #process
18. #known
19. #while
20. #phenomenon