Something called "Copris"?

[wagoncab]

Hello;
Has anyone here ever heard of something called Copris? I am not sure I am spelling it right. My Mom just told me about this. It was something our Grandparents used to put into the chickens water. I do not know for what purpose. I tried to Google it but I am not getting anything. Again, it may be that I am spelling it wrong. This is something that would have been used almost a hundred years ago.
Thanks
Cindy

 

[Eggcessive]

My mother also mentioned that her father putting something pink in the chicks' water when she was young 75 years ago. She doesn't know what it was called. Perhaps it was something to help prevent cocci, or for worming?