one of my hens hatched her first clutch of eggs about a month or two ago and has since been enclosed in a pen away from the rest of the flock. One day i let them out to join the rest of the flock to graze and another hen, less than a year old, came up to the mother hen, flogged her and stole her baby chicks. the original mom didn't even put up a fight she just left and hasn't thought twice about it? The young hen is acting and doing just like the first one did. She clucks, protects, scratches, and lets the babys set under just like the older hen did? has anyone heard of this or has had this happened before. should a hen that young even be showing mother instincts, i mean she hasn't even started laying yet?