I agree with this the other thing I noticed are you keeping your drake with your chickens as he could try and mate with them and this could lead to serious injury
ducks like any animals are a commitment not just a gift they should be planned and researched first make sure you have a suitable area etc.. and ducks should be kept in groups so I don’t think any animal should just be gifted
This looks like splayed leg keep them on a old towel or something grippy so they can’t slip to much
Make sure their waters not to deep maybe add some clean stones so they don’t drown
To fix it you can use a elastic band or a hair tie with a small piece of straw in the middle in a figure of 8