If Male White-Crowned Sparrows Are Reared in the Laboratory Under

question 27

Multiple Choice

If male white-crowned sparrows are reared in the laboratory under controlled conditions, which one will produce the species-specific song as an adult?

• A) A male exposed to the sights and sounds of an adult male of a related species in an adjacent cage while exposed to recordings of his species-specific song before 2 months of age
• B) A male reared in isolation and exposed to recordings of his species-specific song before 2 months of age, and then deafened before he starts to sing
• C) A male reared in isolation and exposed to recordings of his species-specific song before 2 months of age, and who hears the songs of conspecifics during his first breeding season
• D) A male reared in isolation and exposed to recordings of the song of a closely related species before 2 months of age, and then deafened after his song has crystallized
• E) A male reared in isolation and exposed to recordings of the song of a closely related species before 2 months of age, and who hears the songs of conspecifics during his first breeding season

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