One picture to understand | A round trip of 30,000 kilometers, the latest revelation of the migration route of Beijing swifts

One picture to understand | A round trip of 30,000 kilometers, the latest revelation of the migration route of Beijing swifts

From Beijing to South Africa, the Beijing Swift travels nearly 30,000 kilometers round trip. Are there any stopping points during migration? What are the ecological laws? A picture will help you understand >>

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Produced by: Beijing Science and Technology News | Beijing Science and Technology Media

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