I have 9 hens, 3 of them started laying one month ago. New Hampshire, barred Rock and sex link. One of those 3 is periodically dropping a soft egg outside the coop, usually. I cannot tell which one. I would say about 4 times in this month since they started. I’m putting oyster shell in the feed when I remember. But not all the time. Should this be a concern, any ideas or other things I might do. This really worries me