It is possible to speak of thyroid moods, adrenal moods, ante-pituitary or post-pituitary moods, gonadal moods.
"The Glands Regulating Personality"
Louis Berman, M.D.
Breeding seemingly had ended by early August, as evidenced by four adults that showed no gonadal activity and were in advanced stages of molt.
"Summer Birds From the Yucatan Peninsula"
Erwin E. Klaas