Soft or Rubber eggs have a variety of reasons as to their failure, Chickens need a a lot of water for eggs production, failure to take in enough water especially in heat wave conditions, will give you rubber or soft eggs.
Stress is another main factor for a rubber or soft egg, heat stress, too much noise around the cop too often, shipping of chickens etc. there are multiple stresses chickens encounter.
CALCIUM DEFICIENCY
Chickens are often found laying rubber or soft eggs because of calcium deficiency, this can be sorted with crushed oyster shell or i just give my babies crushed egg shells, that i've left in the window pain for about a half an hour to dry out. you don't want your roosters or event the hens to realize how yummy the contents of the eggs are?? If your chickens start eating their eggs it is important to go about finding ways to teach them not to eat the egg, more on that later
