I have 4 pekin ducklings, all about a week old. I noticed yesterday that they were sneezing and 1 of them is quiet and sitting down a lot. She keeps falling asleep and has discharge coming out of her mouth when she sneezes. The discharge is clear. I have put her in a fish tank separated from the others with food, water, blankets, and a heat lamp over her. Will she and the others be ok? Should I give her any medicine? Please Reply!