I've read there are different types of duck poops but not sure what's normal as in consistency, color,& odor. My 5 week old duck often expels a seriously unpleasant liquid. It's dark brown to blackish with consistency between milk &soft yogurt. It's usually accompanied by an audibly wet gasous release. And this stuff has a horrificly foul odor. What is it? Is this normal? And for the love of humanity WHY!? I love my Qwackers but when faced with the clean up of this mess I'm sure he must be possessed by disgusting sewage demons. **if this condition is a serious situation please let me know what to do!