Salen a la luz las "depravadas" costumbres sexuales de los pingüinos

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Across
  1. 2. Young (4)
  2. 6. Explorer (10)
  3. 7. To unveil (7)
  4. 9. Behaviours (15)
  5. 10. Scandalous (11)
  6. 11. They were kept hidden (8, 7)
  7. 13. Coercion (8)
  8. 14. Chick (8)
  9. 15. To struggle (6)
  10. 19. Graphic account (6, 7)
  11. 21. Perverted (10)
  12. 23. To survive (10)
  13. 26. Unusual (7)
  14. 27. To mate (7)
  15. 28. Pioneer (7)
  16. 29. Unedited (7)
  17. 32. Person in charge (9)
  18. 34. Antarctica (9)
  19. 35. Trap (6)
Down
  1. 1. To find (6)
  2. 3. Breeding season (9, 2, 4)
  3. 4. As such (4, 5)
  4. 5. By accident (3, 9)
  5. 7. Discoveries (15)
  6. 8. Colony (7)
  7. 12. To horrify (10)
  8. 15. Average reader (6, 5)
  9. 16. As they are (3, 4, 3)
  10. 17. South Pole (4, 3)
  11. 18. Fascinating (10)
  12. 20. Avid (5)
  13. 22. Explicit (9)
  14. 24. Expedition (10)
  15. 25. Nest (4)
  16. 30. Female (6)
  17. 31. Botched (9)
  18. 33. Greek (6)