| 31. | The slaty spinetail is typically 15 cm long, and weighs 18.5 g.
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| 32. | The young great slaty woodpeckers probably stay with their parents until the next breeding season.
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| 33. | The hindwings are light slaty-grey.
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| 34. | The hindwings are pale slaty-grey.
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| 35. | The forewings are dark slaty-fuscous, irregularly sprinkled or mixed whitish-grey.
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| 36. | The hindwings are dark slaty-grey.
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| 37. | The forewings are dark slaty-fuscous.
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| 38. | The plumage of adult birds is blue-grey with darker slaty-grey flight feathers.
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| 39. | The slaty flowerpiercer has an upturned bill with a hooked upper mandible and pointed lower mandible.
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| 40. | Within 20 days, slaty-breasted tinamou have gained adult size, bit not weight.
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