I am a new duck owner and I am worried over every little sign of a problem. My pekin duckling is making a noise with every breath and every peep she makes. I don't know what it could be and I am scared she is in trouble. My black swedish duckling also seems to open her mouth randomly looking- I don't know the words- not struggling but uncomfortable. They are eating the correct food and I am taking care of them just how everyone has written on about how to raise them correctly. I don't know what I should do about this problem.