Hi, we have seven hens and they just started laying. We were away from three days and came back to four eggs laid, the first eggs we've seen. Three days went by without any additional eggs, and today there was an egg that appears to be a compound egg with one larger egg (that was already cracked) and a smaller egg that was attached. What could this mean? Also, is it normal for chickens to lay really irregularly when they first start laying?