[Campbell Biology P.1196] Which of the following statements accurately describes a stage or c... | Practice Question

Which of the following statements accurately describes a stage or condition of song learning in white-crowned sparrows, according to the text?

• A: Fledgling sparrows can develop the adult song even if they never hear it during the sensitive period, as long as they sing a subsong.
• B: The sensitive period is primarily when the juvenile bird sings tentative notes called a subsong, comparing it to memorized songs.
• C: Song learning in sparrows is bounded by genetically controlled preferences, but exposure to their species' song early in life is critical for developing the adult song.
• D: Once a sparrow's song "crystallizes," it can still learn and incorporate new melodies from other species, demonstrating lifelong vocal plasticity.