We are new chicken owners - our 3 hens are 6 months old and we got our first eggs this week!!! I have the hens out in the yard during the day and in their coop at night. My mother expressed concern over my allowing my two children to play out in the yard where the hens have pooped freely. She says "it's just not safe". I'm looking for definitive "resources" to prove her wrong, if possible, since I like our current arrangement. It won't be enough to simply tell her that millions of people similarly situated have been just fine, since her granddaughters are at stake. HELP!!!!