The color is influenced by the bird's diet. Normal droppings are formed into a coil, reflecting the size and diameter of the intestine. Along with the fecal portion is a variable amount of uric acid or urate ('whitewash') and urine ('water'). The urates are usually in a blob or mixed in with the feces and should be white or beige.
A bird has diarrhea when the fecal portion of the dropping lacks form ('pea soup'). Diarrhea is not very common in birds. A dropping with a normal fecal portion but a large amount of urine around it represents a watery dropping (polyuria), not diarrhea! All diarrheic droppings appear loose, but not all loose or watery droppings constitute diarrhea. This Is a very important distinction. Polyuric droppings may indicate disease (diabetes or kidney disease), but more often they result from increased water consumption or consumption of large amounts of fleshy fruits and vegetables.