The fecal volume is critical to watch when weaning, changing diets, or if any stress is anticipated. Small, scant droppings can also occur with intestinal obstruction, as from a foreign object or a tumor mass. More commonly you will see increased urates or increased liquid urine. True diarrhea can be caused by parasites, bacteria, or fungal infection as well as from certain medications and foods. Changes in the amount of urine can be caused by diabetes, kidney disease, certain drugs, toxins, nervousness, and foods with high water content.
Color is also an important indicator.
Feces of birds on seed diets generally have greener droppings, while those on pelleted diets have browner droppings. Clay colored feces may indicate pancreatic disease, maldigestion, or malabsorption. Bright green feces may be found with Chlamydia , other bacterial, or viral diseases that affect the liver. A change in the color of the urate to pink, red, or chocolate milk can be seen with lead or zinc poisoning. Lime green urates can be seen with chlamydiosis.