1).Like st32 said,,,,RATS!!! I think the rats ate more of the chicken feed than the chickens.

2.) Everything will try to eat the chickens. Had a Bobcat rip the chicken wire out from around the bottom
that I had just buried and not nailed to a secure board. Killed 3, ate 1.

3.) Laying mash was 20$ for 50lb. I can buy a lot of eggs for 20$.

4.) They quit laying after a year or so.

5.) They were kind of fun for a while. Used to love watching them catch cockroaches and lizards in the yard.
They will eat whatever they can in your garden too, like tomatoes.