Bồ câu cảnh báo nguy hiểm bằng cánh
hi bồ câu bay lên không trung vì sợ hãi, đôi cánh của chúng tạo ra tiếng rít đặc biệt để cảnh báo những con khác.Ảnh: pbase.com.Nhiều nhà điểu học phỏng đoán rằng bồ câu có một cách nào đó để cảnh báo đồng loại khi chúng phát hiện mối nguy hiểm, bởi mỗi khi một con bay lên vì hoảng sợ, những con khác gần nó cũng đồng loạt bay theo.
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