Chicks dying

[lena_]

Thanks everyone for your advice! If I want a vet to diagnose what do I do? Send one? I also have 8 ducks in my flock. The only water my flock has are two tires and a boiler (where ducks bathe) which are cut in half and a larger bowl.
Also, can someone please explain to me what liming means? I mean, there are plants in the yard but no grass (I think my chickens eat it).

Do you have any of the dead birds left? If you do then you should try and find a place where someone can do a necropsy, and test for coccidia. A university lab or a vet clinic may be able to do it.

If not, I would find the nearest avian vet clinic, and take your chicks in. The clinic will take a fecal sample and test it. If it comes back positive then begin treatment ASAP

Hopefully you can stop this!