I have 3 hens and one of them is a Columbian Blacktail. For the last few months she has been laying more than one egg a day. Recently over a period of 36 hours she laid five eggs. Not all of them have shells, just a membrane, but the eggs are perfect. She can spend many hours of the day rather glum while waiting for the eggs to pop out. She is eating and drinking, when not laying an egg and seems a happy girl when its all over, but unfortunately it starts all over again all too quickly. Has anyone else experienced this? I'm concerned that this is tiring her out and not doing her any good at all. I love her to bits. Any advice gratefully received.