I was wondering what the consensus is about maintaining 14 hours of light throughout the winter. Several people have suggested this as a means to keep hens laying regular. Others have said that it shortens their egg laying years. One friend says she allows normal light reduction and lessened egg production and her hens are 7 and 8 years old and still laying 4 eggs a week. Her brother keeps light on his hens and they only last 2 1/2 years. Any opinions?