Duckling deaths - odd

[Verge134]

So I got my first pair of snowy mallards with my chickens back in the end of February. They were 3 days old when I got them. All seemed fine but on day 6 late at night I found a duckling dead...

I felt so bad for the lonely one we went to TSC and had to get SIX MORE... just 2 days ago my spouse found one of the ducklings dead... and now I just found another. Different breeds...

Should I be medicating them all now that I've lost some?

None of the others are sick. No blood, no worms, all these ducklings just looked tired and small.

 

[Verge134]

The TSC ducklings are officially a week old now and the remaining 5 ducklings look lively and happy

 

[casportpony]

Welcome to BYC and so sorry for your losses. May I suggest that google the name of your state and "veterinary diagnostic lab", then contact them and ask about having a necropsy done? That way if it's something contagious you'll know if you should medicate the others.