| 41. | They also have done extensive research on bat guano.
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| 42. | PG-13 ( strong language, violence, ugly bats, guano)
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| 43. | She wears a baseball cap to keep the guano out of her face.
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| 44. | Chinstrap penguins strutted and preened on a pancake of ice soiled with guano.
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| 45. | It was formerly quarried for phosphate ( guano ).
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| 46. | Later during the 19th century many islets were used by men collecting guano.
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| 47. | Von Bibra established sheep on the island and traded guano from its bays.
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| 48. | There are thick layers of guano lying on the rocks in the area.
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| 49. | The guano was just piled in dumps near the engine houses and derricks.
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| 50. | The Guanay cormorant is the main producer of guano.
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