I have a duckling that has been sneezing since the day I got her. I don't know what could be wrong. She acts like the other healthy ducklings, but she sneezes and makes little honking noises out of her nose sometimes. She has deep enough water to dunk her head and her housing is clean and dry most of the time. Her sneezing hasn't been contagious to the other ducklings I have with her, so I don't know what's wrong. Any ideas? EDIT: She is two weeks old, could it be her voice changing? Also, sometimes there is like a deeper sound when she talks. It sounds like two voices at the same time.