We had 2 hens, Lucy and Eloise. We had them a year and they seemed great but were not keeping up with the egg demand of my family. So we purchased 5 more, 3 layers and 2 pullets. We put them in the same pen but separated. after a week we took down the separator. they were fine aside from a few squabbles. and made it a total of 25 days. 2 weeks ago Lucy became broody and for about 1 week I would pick her up and put her out of the nest and on the bottom where she could eat and drink with the others. I did that this morning and this afternoon checked for eggs. she was dead back near the nest. Any ideas? what caused it? and will it affect the others?