TLS Online TPP Program

#Question id: 12114


Researchers have found that a region of the canary forebrain shrinks during the nonbreeding season and enlarges when breeding season begins. This annual enlargement of brain tissue is probably associated with the annual

#Unit 10. Ecological Principles
  1. Addition of new syllables to a canary’s song repertoire. 
  2. Crystallization of subsong into adult songs.
  3. Sensitive period in which canary parents imprint on    new offspring. 
  4. Renewal of mating and nest- building behaviors.