| 1. | The English name derives from the bird's red underwing.
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| 2. | Another useful feature is a large whitish panel on the underwing.
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| 3. | In flight, it shows a green speculum and pale underwing.
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| 4. | Underwing coverts are off-white with brown-grey remiges.
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| 5. | It also seems to lack the underwing of gray squirrel tail.
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| 6. | Females are slightly smaller with a yellow stripe on the underwing.
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| 7. | The underwing coverts are a darker shade of grey-white.
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| 8. | Gr . or WGr ) underwing rockets for the first time.
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| 9. | However, that species has a darker head and all grey underwing.
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| 10. | The breast and belly and underwing coverts are heavily streaked.
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