We woke up this morning to find one of our ducklings not walking and having green poop. Another just has nasal discharge and is a bit sluggish. I have isolated these two. They are still very alert and peeping normally. Not sure if they are eating the same, because they don't always eat their feed first thing in the day. We've been giving them soldier fly beetle larvae and flies that we catch, and they eat them up! I put electrolytes in their water, and they are drinking normally. I've always included a niacin and garlic supplement in their feed. I'm wondering if I should up this supplement and add some powdered oregano in it? I have a vet appointment scheduled for this Tuesday, but I would prefer to treat this naturally, if possible. Has anyone had experience with this? How might I treat this?