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| Hummingbirds all a-flutter during courtship: How fluttering feathers can generate courtship sounds Posted: 08 Sep 2011 11:50 AM PDT Though famous for their mid-air hovering during hunting, tiny hummingbirds have another trait that is literally telltale: males of some hummingbird species generate loud sounds with their tail feathers while courting females. Now, for the first time, the cause of these sounds has been identified.  |
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