Really, I think it is just old age. It sounds exactly like what happens to mine when they die of old age, they are just dead. It is not your feeding program or your watering program.
I would not treat all the other hens, because of two deaths a month apart. If the rest are acting fine, they probably are fine.
I would look at new chicks to replace them!
Often times, people new to chickens tend to look at them like pets, and individuals, and are highly distressed when one dies. Try looking at it as a flock, where as, individual birds will come into and out of the flock. While there are instances on here posted of very old chickens, generally speaking, a more realistic age for a chicken is about 3 years. To me, a 4 year old chicken is a VERY old chicken. I also have the theory, that places with warmer winters than ours, get longer lived chickens. And higher quality chickens probably live longer too, but it can depend. The good news is that you can always add a few chicks each year, and that is fun.
I think you are doing fine,
Mrs K
I would not treat all the other hens, because of two deaths a month apart. If the rest are acting fine, they probably are fine.
I would look at new chicks to replace them!
Often times, people new to chickens tend to look at them like pets, and individuals, and are highly distressed when one dies. Try looking at it as a flock, where as, individual birds will come into and out of the flock. While there are instances on here posted of very old chickens, generally speaking, a more realistic age for a chicken is about 3 years. To me, a 4 year old chicken is a VERY old chicken. I also have the theory, that places with warmer winters than ours, get longer lived chickens. And higher quality chickens probably live longer too, but it can depend. The good news is that you can always add a few chicks each year, and that is fun.
I think you are doing fine,
Mrs K