I'm new to raising chickens and was wondering about predators (weasels and racoons and fox and such)....Do they mostly strike at night? Also....My enclosure is 6 feet high topped with bird netting to keep flying predators out. Am I kidding myself that they'll land on it and fly away (if they manage to untangle themselves), or do hawks rip through that stuff (it's plastic)? My girls are just 7 weeks old, and love being out in their enclosure. I'd like to let them be out there when I'm at work all day (I do close them in the coop at night), but I'm just a nervous wreck worrying there's some small opening I missed that a hungry critter might get through.... Are they "safe" out there during the day? (Enclosure walls are hardware cloth from 6 inches below ground to 3 feet about ground....then 1 1/2" chicken wire up the next 3' up to the top.) Thoughts? Advice? Anti-worry medications you can recommend?