| 21. | When flying, black-billed wood dove shows chestnut in the underwing.
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| 22. | In flight both sexes show a pale grey underwing.
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| 23. | Another 150 could be carried in 10 underwing pods.
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| 24. | The underparts and forehead are white, and the underwings as the adult.
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| 25. | Photoflash ejectors could be carried in underwing tanks for nighttime photographic reconnaissance missions.
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| 26. | The adult augur buzzard has white underparts and underwings.
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| 27. | The underwings are crpytically colored in lighter greyish brown.
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| 28. | Small outrigger struts retracted aft into underwing fairings set at mid-span.
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| 29. | The underwing is white with a dark trailing edge.
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| 30. | The underwing cabin has dual controls and is entered via gull wing doors.
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