A region of the canary forebrain shrinks during the nonbreeding season and enlarges when breeding season begins. This change is probably associated with the annual
A. addition of new syllables to a canary’s song repertoire.
B. crystallization of subsong into adult songs.
C. sensitive period in which canary parents imprint on new offspring.
D. elimination of the memorized template for songs sung the previous year.
Answer:A
A region of the canary forebrain shrinks during the nonbreeding season and enlarges when breeding season begins. This change is probably associated with the annual
A. addition of new syllables to a canary’s song repertoire. B. crystallization of subsong into adult songs. C. sensitive period in which canary parents imprint on new offspring. D. elimination of the memorized template for songs sung the previous year.