Trí tuệ của loài vẹt bằng một đứa trẻ lên ba
Thí nghiệm của một nhóm nghiên cứu trường Đại học Vienna cho thấy những con vẹt thông minh hơn những gì bạn biết về chúng
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xILDmnDhu5tlxJDhurBGcWhhaMahL+G7juG7mw==