| 41. | In flight, watch for the distinctive white shoulder patch, green speculum and black tail.
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| 42. | Both sexes have sky-blue wing coverts, a green speculum, and yellow legs.
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| 43. | The male is all black, except for white around the eye and a white speculum.
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| 44. | In flight, the lack of a white border to the speculum is a key difference.
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| 45. | Both sexes have blue speculum feathers.
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| 46. | In fact, the introduction of the speculum was far more controversial than that of the vibrator.
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| 47. | An aspect of the " Speculum Historiale " is the large space devoted to miracles.
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| 48. | The " Speculum Regale " describes other cetaceans, including the Sperm Whale and Narwhal.
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| 49. | The middle part is called Speculum, which refers to the special rounded mirror used by gynaecologists.
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| 50. | Two speculum ( an alloy of mostly copper and tin ) with arsenic to improve the finish.
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