Went to get eggs today and one egg was about as big as 3 with no shell. Picked up mess and threw it out of nest and there was also a cartilage type bone about 2 x 2 inch. Similar to an after birth in mammals but had this hard cartilage in it. Is it possible this chicken is quiting laying and got rid of something or maybe just a quick and she found and old bone and carried back to the nest. Looks like new still fresh and moist cartilage. All birds look and act fine.