1. The hens, 6- and 13-month-old, and the colostomized cockerels were maintained for successive 6 periods of 2 weeks each under the different combination of environmental temperature and relative humidity, 25, 30 and 35°C, and 35 and 70%, respectively. In each period, urine and feces, or droppings were collected quantitatively for last one week.
2. There were statistically highly significant differences in individuals for water content of feces and droppings in the older hens and colostomized cockerels but not in the pullets.
3. In the pullets, temperature and humidity significantly increased water content in the droppings.
4. In the older hens, temperature and humidity did not increase water content in the droppings when humidity was 35% or when temperature was 25 or 30°C, respectively.
5. In the colostomized cockerels, temperature and humidity did not have a quite consistent effect on the water content in feces and urine, and water intake. Volume of urine was highly correlated with the volume of water intake.