Moi truong cuc ky khac nghiet o Nam cuc da buoc cac sinh vat bac cao rut lui
khoi lanh dia cua no. Ngay ca cac dong vat lon co the chiu duoc cai ret - 80 do
C cua Bac cuc nhu gau trang, voi bien... cung khong he co mat o cuc Nam. Vay ma
chim canh cut lai co the lam duoc dieu do.
De hieu vi sao, chung ta phai xem lai “gia pha” cua chung.
Truoc het, canh cut la mot loai chim boi o duoi nuoc co xua nhat. Co the no da
den day dinh cu tu truoc khi chau Nam cuc mac "ao giap bang". Do dien tich dat
lien hep, mat bien rong, nen noi day co the coi la khu vuc phon thinh nhat trong
cac thuy vuc, voi nguon thuc an phong phu, tro thanh vung dat tot cho canh cut
tru ngu.
 Sau nua, do ket qua toi luyen trong gio va bao tuyet qua hang
ngan van nam, long tren toan than cua canh cut da bien thanh lop lop dang vay
gan chat. Voi loai “chan long” dac biet nay, nuoc bien khong nhung kho tham thau,
ma du cho nhiet do co xuong toi -100 do C, chim cung khong he han gi. Dong thoi,
lop mo duoi da cua no rat day, nen cang dam bao giu nhiet cho co the.
Them nua, chau Nam cuc khong co thu an thit, the la canh cut
da co duoc mot manh dat kha an toan. Chang the ma khi cac nha nghien cuu dat
chan len manh dat tan cung the gioi nay, chim canh cut khong nhung khong bo chay,
ma con don tiep ho voi thai do rat than mat (va to mo). Article source http://w4rum.com/502.t
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