One picture to understand | A round trip of 30,000 kilometers, the latest revelation of the migration route of Beijing swifts
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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 >> Produced by: Science Central Kitchen Produced by: Beijing Science and Technology News | Beijing Science and Technology Media Welcome to share to your circle of friends Reproduction without authorization is prohibited |
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