Four groups of Japanese quail, 50 for each, were subjected to yellow, green, red, and blue light from 10-12 weeks of age to study the effect of different light regimes on: behavior performance, body weight, feed and water intake, egg production and weight. Each week five birds were killed to obtain serum samples (for estimation of FT3, estrogen and progesterone) and to estimate carcass quality. Exposure of quails to red and yellow light (long and medium wave length) resulted in high feeding, drinking, egg production and weight, but lower the growth rate. On the other hand, blue and green light (short and medium wave length) group exhibits a lowest feeding and drinking. Egg production and weight, but higher in growth rate. Quails reared in a blue light had the highest serum FT3 and lowest estradiol and progesterone, while yellow light group showed lowest FT3 and highest estradiol and progesterone. The red group had the highest hatchability and fertility percentage.