green watery diarrhoea

[babychickens321]

my chickens have green watery diarrhoea
im on holiday and my uncles taking care of them so i cant send images. hes at work so he cant take pictures of the poo right now but he says its everywhere and dark green but he cant remember the exact shade. doesnt know which chicken it is. is there any general food he can give which helps with majority cases of diarrhoea until i come back (2 days)

 

[SmiYa0126]

Have him check their crops to make sure they're eating.