Birdsong structures are:
A) larger in male than in female birds.
B) influenced entirely by genetics.
C) unaffected by hormones.
D) All of the answers are correct.

Question

Quizplus · Accepted Answer

Male birds generally have larger vocal organs, which result in larger birdsong structures compared to female birds. This is particularly evident in species where males use their songs to attract mates.

Answer: D
 The size and complexity of birdsong structures are influenced by genetics, and male birds generally have larger structures than females. However, hormones such as testosterone can also affect the development and production of birdsong. Therefore, all of the answer choices are correct.

Birdsong Structures Are