Official 28 Lec 2
Question 2 of 6
When giving magpies the mirror mark test, why did researchers place the mark on the magpies’ throats?

A.

Throat markings trigger aggressive behavior in other magpies

B.

Throat markings are extremely rare in magpies

C.

Magpies cannot see their own throats without looking in a mirror

D.

Magpies cannot easily remove a mark from their throats

正确答案:C

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