Yes. Most farms will use the soft shelled eggs for themselves as they do not keep well and the lack of calcium in the shell makes them hard to store. There is nothing wrong with the "rubber" egg except the hen can no longer process the calcium she ate for use in the making of an egg, or is not receiving enough calcium in her diet. It's a good idea to feed hens the shells from their eggs, dry and crushed, as a calcium supplement.
Platypus eggs are soft and leathery, rather than hard-shelled.
Reptile eggs are soft-shelled - as opposed to the calcified shell of a birds egg.
The primary function - is to contain the developing embryo and its nutritional yolk-sac until the foetus is ready to emerge. That applies whether it's a hard-shelled egg like a bird, or a soft-shell like a reptile.
Yes.Platypuses, along with echidnas, are the only known egg-laying mammals, or monotremes. They lay soft-shelled, leathery eggs.
It has a soft tush ;)
Reptile eggs are soft-shelled so that the babies can break out of the shells. Bird eggs are hard-shelled, because baby birds use their beaks to crack the shells of their eggs, but since reptiles don't have beaks to use to break their shells, their eggs have to be soft-shelled.
Eat it !
Turtle eggs (and tortoise eggs) can be either hard or soft-shelled, depending on the species.
The only surefire way is to set up a camera/camcorder and look on them to see what hen may be eating eggs. Usually, hens eat eggs because they do not get enough protein. You can feed them COOKED eggs to try and prevent this problem. If the hens are laying soft-shelled eggs, they need more calcium and minerals in their diet. Try an oyster shell supplement in their feed, or another supplemented recommended to strengthen egg shells. Presented with a soft-shelled egg, some hens who would never think to crack a normal egg do what comes naturally. If all else fails, the classic way to deal with an egg-eater is harsh but effective: turn them into your dinner instead.
yup
You cook it up and eat it.
yes