Questions: All my ducklings are 4 or 5 weeks old. Refering to them as "he" but not sure of sexes yet. Duckling 1 (Jumper)- Pekin 1) He is bowlegged and 1 foot turns in. I added nutritional yeast,and brewers yeast to their food. I also added poultry nutri-drench to the water. I added these things apx 2 weeks ago. No real difference in legs, but he seems happy and gets around. 2) In the last day or so it seems he is off and on breathing heavy. Not all the time, but some times. Not using a lamp anymore, and no one else is breathing heavy. They have water deep enough to snort in. They have 1 or 2 swimming sessions a day in the tub with lukewarm water. Again, he is eating and drinking and playing and swimming. Duckling 2 (Notorious B.I.G.)- Either buff or Khaki 1) He makes a clicking sound with his mouth. Not that he is purposefully doing it. It happens when he eats and when he preens himself. Anyone know what this is? FYI- Googling issues for ducks is just as scary as googling a weird rash or symptoms for myself....worst of the worst pops up!!