| 31. | There were underwing attachment points for other armament packages.
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| 32. | Each wing was equipped with four underwing pylons.
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| 33. | The forehead, the areas around the eyes and underwing coverts are usually red.
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| 34. | The latter species also has a chestnut underwing, but is shorter-tailed.
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| 35. | The underwings are whitish overall with rufous markings, particularly in the patagial area.
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| 36. | The veery shows the characteristic underwing stripe of " Catharus " thrushes.
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| 37. | The white underwing coverts are striking in flight.
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| 38. | The underwings are white with black flight feathers.
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| 39. | The underwing is grey with black flight feathers.
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| 40. | The underwing is dark grey with black wingtips.
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