I think it's only 1 week and 1 day old. The one that ate a cigarette butt is ok and this time it's another duckling. By the way thanks for telling how to get the mucus out of him/her. The duckling is now really not having those mucus in his nostrils.
We're not a country that has winter season and when I just went to them and let them outside I saw him/her bobbing his head up and down and the duckling has some liquid thing in his nostrils. Any tips to what I can do?