My duck has a red line across its beak. We thought it was blood but it doesn't wash. She is a Pekin duck around 6 weeks and 5 days old. She has also been more aggressive. If you anything my ears are open.
You might let them in a inflatable pool or a wide bowl to let them swim around. Ducks can not be happy if they don't swim or go outside for at least 30 minutes a day.
