I was collecting the eggs from my cheeky little bantams the other day and found a soft rubbery egg.
It can happen to any hens but in particular new hens that have just come into lay or older hens which my bantams are on the older side now – think they are about 5 years old
Hens need calcium in order to produce lovely eggs on a daily basis. If they don’t get enough calcium in their diet, they will lay a brittle or even soft rubbery shelled eggs. If this is the case consider adding oyster shell (I use the fine oyster shell) to their feed or treats which is rich in calcium or we have found limestone flour is also a good source of calcium.
Have a look on the healthcare page for information on Mixed Poultry Grit which contains oyster shell and Limestone flour.