PhysOrg Posted January 12, 2023 Share Posted January 12, 2023 Hummingbirds, native to North and South America, are among the smallest and most agile birds in the world. Often barely larger than a thumb, they are the only bird species that can fly not only forwards, but also backwards or sideways. Their characteristic hovering flight makes that possible.View the full article Quote Link to comment Share on other sites More sharing options...
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