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apodiform: Media
bird
Images
Chestnut-collared swift (Cypseloides rutilus)
Painting by H. Jon Janosik/Encyclopædia Britannica, Inc.
Rivoli's hummingbird
Rivoli's hummingbird (Eugenes fulgens) has iridescent structural colour.
Earl Kubis—Root Resources/Encyclopædia Britannica, Inc.
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