单词	swordbill
释义	swordbill /ˈsɔːdbɪl / (also sword-billed hummingbird) noun A mainly green hummingbird with a very long bill, found in northern South America. Ensifera ensifera, family Trochilidae. It's known for its great birdlife, with many small flocks of colourful scarlet-bellied mountain tanagers and sword-billed hummingbirds.... Some, like lancebills and swordbills, can't use them because of bill shape. Clearly this is still one of the most important, if not the most important factor controlling bill shape, otherwise we wouldn't have curlews, ibises, sword-billed hummingbirds, flamingos, crossbills, or all those oystercatcher polymorphs.
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