I have four hybrids, I bought them as point of lay and have had them for just over a year. They have only been laying aprox. 2 eggs a day between them recently. When I let them out yesterday morning I found something (pics. below) on the floor at the back near where they tend to sleep. One of them acted a bit moody for a while after I had let them out but they all seem healthy now. What is it, why has it happened, should I stop eating the other eggs and what should I do about it?

