I have two 3 ish week old pekin ducks. One is very confident and dives under the water during bath time and enjoys my company the other is terrified of me and just floats when I put them in the tub for a swim? I handled them both just as much and got them together. Could she just be an anxious girl? When I hold them both he breathes normal and she breathes as if she's shivering from fear.