Chim dem nhu nguoi.

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Chim dem nhu nguoi

Nguoi khong phai loai duy nhat dem so tu trai sang phai, boi mot nghien cuu chung minh rang chim cung lam nhu vay..

Chim dem nhu nguoi - Ban co dau.
Chim dem nhu nguoi - Ban khong dau.
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Chim dem nhu nguoi.

Tu lau gioi khoa hoc  phat hien ra rang nhieu loai dong vat - nhu ong mat, vuon cao, sam cam Bac My, ky nhong lung do - co kha nang dem. Tuy nhien, chua co ai chung minh rang dong vat cung "doc" so tu trai sang phai giong nhu nguoi.

Cac nha khoa hoc  cua Dai hoc  Padua (Italy) tim hieu kha nang dem cua chim bang cach nghien cuu  mot dan chim bo hat Clark (thuoc ho qua). Dan nay co ca nhung ca the truong thanh va con non. Nhom nghien cuu  dat nhieu vat the trong mot hang roi huan luyen lu chim de chung biet cach chon vat the thu tu  theo chieu tu tren xuong duoi. Moi khi chim mo trung vat the thu tu  chung duoc nhan phan thuong la thuc an.

Ban dau cac vat the duoc dat thang hang theo phuong thang dung truoc mat lu chim. Nhung khi chung da thanh thao trong viec chon vat the thu tu, cac chuyen gia  ben dat nhung vat the theo chieu ngang va sap xep chung theo thu tu tu trai sang phai.

Chim bo hat Clark. Anh: nationalzoo.si.edu.

Ket qua cho thay dan chim van dem chon duoc vat the thu tu. Dieu do chung to chung biet cach dem tu trai sang phai.

“Day la lan dau tien chung ta chung minh rang dem so tu trai sang phai khong phai la hanh vi rieng biet cua loai nguoi”, nhom nghien cuu  ket luan tren tap chi  Biology Letters.

Trong mot nghien cuu  khac doi voi sao da, cac nha khoa hoc  cua Dai hoc  Chicago  (My) chung minh rang, giong nhu nguoi, chim ghi nho tot hon sau giac ngu sau.

Nhom nghien cuu  huan luyen sao da de chung dap lai hai am thanh, trong do mot am thanh bao hieu chung se duoc nhan thuc an con mot am thanh khac bao hieu chung se bi trung phat. Sau mot giac ngu dan chim phan biet hai am thanh de dang hon so voi khi chung khong ngu.

Nghien cuu cua Dai hoc  Chicago  duoc cong bo tren tap chi  Neuroscience.

Minh Long

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Theo VNEXPRESS.NET

Updated: 20/01/2010 | Views: 7 | Comments: 0

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Hien tai chua co binh luan nao ve bai viet Chim dem nhu nguoi!

Ban co y kien gi ve bai viet Chim dem nhu nguoi nay? Hay goi suy nghi, binh luan, danh gia, loi khuyen ... cua ban ve bai viet Chim dem nhu nguoi ban tai day.

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