Some birds experience significant changes in body mass and size of testes. These are changes that typically occur according to a(n)
A) annual rhythm.
B) daily rhythm.
C) lunar day rhythm.
D) monthly rhythm.

Question

Quizplus · Accepted Answer

These changes in birds are typically associated with an annual rhythm, often in response to the changing seasons which affect breeding behaviors and physiological preparations for those periods.

Some Birds Experience Significant Changes in Body Mass and Size