| 41. | The strongest indicators are the comb, plumage, and color.
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| 42. | The non-breeding male differs in having slightly paler plumage.
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| 43. | Males have richly colored metallic plumage, metallic on the upperparts.
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| 44. | As suggested by its name, the plumage is overall brown.
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| 45. | Juvenile birds also have similar plumage, although it is duller.
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| 46. | Albatrosses take several years to get their full adult breeding plumage.
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| 47. | They are strikingly patterned with black, white and brown plumage.
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| 48. | The plumage darkens after many months until it is almost black.
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| 49. | The plumage of male and female goose is usually the same.
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| 50. | The female has all-black plumage and a darker bill.
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