I got to thinking, when my girl is finally given eggs to hatch this spring, how do I protect the chicks from falling out of the nest? Her nesting box is 4 feet off the ground, how does a chicken come off the nest and leave the chicks with out them falling out? She really wants to be a mommy so I'm putting eggs under her from ,another person but am curious as to how they do not fall out or get knocked out. Thanks