Also- please let us know
- how many chickens do you have?
- how big is the coop? Run?
- what do you feed?
- What do you use for bedding?
- how frequently do you clean?
I don’t have chickens but
If that was my chicken flock, I’d go grab them and check them for maggots on their vents-
If they are suffering from fly strike and/ or pasty butt, the flies may be attacking them, and the maggots may be coming off of the hens.
If not, I’d say it’s time to do a deep...