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) renewal of mating and nest-building behaviors
D) elimination of the memorized template for songs sung the previous year

Question

Quizplus · Accepted Answer

The enlargement of the canary forebrain during the breeding season is likely associated with the addition of new syllables to their song repertoire, as song learning and production are crucial for attracting mates and territorial defense during this time.

A Region of the Canary Forebrain Shrinks During the Nonbreeding