| 31. | The colour of the tail and flight feathers are the most reliable distinguishing features.
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| 32. | Saker falcons have brown upperbellies and contrasting grey flight feathers.
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| 33. | The most common being the right-wing flight feathers of turkeys.
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| 34. | Instead, these birds lose all their flight feathers at once.
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| 35. | The flight feathers and upperside of the tail are blue.
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| 36. | Young birds have wider pale fringes on their flight feathers.
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| 37. | All have 12 tail feathers and nine primaries flight feathers.
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| 38. | While inside the nest, the female moults her flight feathers and incubates the eggs.
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| 39. | The primary flight feathers are bluish with brown edgings.
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| 40. | In flight the greenish yellow flight feathers are obvious.
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