We just purchased 14 18 month old hens from a neighbor. He told us he was getting about 12 eggs in a week. That just doesn't sound right from what I've read. Is there something we can feed them to increase egg production? We are using chicken feed, oyster shells and scratch grains. We just got them 2 days ago so will it take them a little time to adjust to new surroundings. They have a large coop and a huge pen so they're not free ranging to hide their eggs. New to chickens and we appreciate your help in advance.