Izzy, a couple of things for you to do.
Verify that they have deep enough clean water to dunk their nostrils and eyes. They will sneeze if they can't dunk their heads. They will get eye infections if they can't dunk their eyes.
Pick the duckling up and press it lightly against your ear. If you can hear rattling or feel rattling, then the duckling needs antibiotic.
Get yourself a larger box and set the brooder lamp so it only heats one corner. Ducklings need different heat levels for different activities. When they are out and about, or eating or drinking, they need it cooler. Then when they sleep, they need it warmer. They will move from one area to another.
They must have water to aid in swallowing their food. Again, back to the water situation.
Your open window did not hurt them.
Verify that they have deep enough clean water to dunk their nostrils and eyes. They will sneeze if they can't dunk their heads. They will get eye infections if they can't dunk their eyes.
Pick the duckling up and press it lightly against your ear. If you can hear rattling or feel rattling, then the duckling needs antibiotic.
Get yourself a larger box and set the brooder lamp so it only heats one corner. Ducklings need different heat levels for different activities. When they are out and about, or eating or drinking, they need it cooler. Then when they sleep, they need it warmer. They will move from one area to another.
They must have water to aid in swallowing their food. Again, back to the water situation.
Your open window did not hurt them.