A region of the canary forebrain shrinks during the
Chapter 51, Problem 51.20(choose chapter or problem)
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 canarys song repertoire. b. crystallization of subsong into adult songs. c. sensitive period in which canary parents imprint on new offspring. d. renewal of mating and nest-building behaviors. e. elimination of the memorized template for songs sung the previous year
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