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What Do Young Male White-Crowned Sparrows Match Their Vocal Output

Question 69

Multiple Choice

What do young male white-crowned sparrows match their vocal output to when they first begin to sing?


A) any birdsong they hear during their initial days of singing
B) the memory of their species' song heard months earlier
C) the memory of whatever song they heard during an early critical period
D) an instinctive blueprint of their species' song

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