Ok, hard part over - trying to make the title short enough 
Got my first two chickens two Saturdays ago.
1 - By accident the cats and chickens are drinking out of the same outdoor dish with water in it.
Can this be a problem to either of them?
2. Chickens have been free-ranging some of the time. Some of the places they have been rummaging is / are where old worm castings get dug into.
The castings contain pieces of cooked and uncooked egg shell.
Also, when my pet rats have finished eating pieces of raw chicken carkass, this has also been put into the worm farm.
Can this be a problem for the chickens seeing as there is quite a period of time before worm manure is put out into the garden?
3. Since the chickens have nicely dug over certain areas of the garden the cats have been peeing, and mostly likely pooping into where the chickens have scratched. The chickens have gone back to the same places to rescratch.
Is this potentially going to cause a problem?
Apologies if this should have been three separate posts.
Cheers,
Sue

Got my first two chickens two Saturdays ago.
1 - By accident the cats and chickens are drinking out of the same outdoor dish with water in it.
Can this be a problem to either of them?
2. Chickens have been free-ranging some of the time. Some of the places they have been rummaging is / are where old worm castings get dug into.
The castings contain pieces of cooked and uncooked egg shell.
Also, when my pet rats have finished eating pieces of raw chicken carkass, this has also been put into the worm farm.
Can this be a problem for the chickens seeing as there is quite a period of time before worm manure is put out into the garden?
3. Since the chickens have nicely dug over certain areas of the garden the cats have been peeing, and mostly likely pooping into where the chickens have scratched. The chickens have gone back to the same places to rescratch.
Is this potentially going to cause a problem?
Apologies if this should have been three separate posts.
Cheers,
Sue