sick parakeet

What can I do to treat a parakeet's watery poop?? He does not show any other signs of illness. He eats fine and is very active.

Look at what he's fed. Main diets of fruit & veg can cause watery poop (which is not diarrhea) celery, ice burg lettuce & other pale coloured veg can cause watery poop if given large amounts. They won't harm the bird however, they're not nutritional either. Richer dark green & brightly coloured fruit & veg will give your budgie better nutrition.
   
If he's on sold foods such as seed & pellet then take him to a vet. Diarrhea is serious in birds.
   

A bird should be only fed about 45% fruit and veggies and the rest a good great of seed.