Hi I am contemplating building a large run for my 8 chickens and three ducks soon. They currently reside in runs that only provide about 6 square feet of space per bird. This worked out perfectly for a year, since they free ranged during the day. Now we have a fox problem and can't let them range. Their run is built extremely well and I don't worry about a fox getting in, but i do worry about it during the day. If I build a run similar to an aviary, will it keep a fox out? I'm not worried about other predators really, and the birds will be locked in a secure coop at night. The aviary I am envisioning would be a wooden fence covered in welded wire with an apron. The coop would be inside and I would secure flight netting over everything. Pretty similar to some of the ones in the exotic aviary thread in the duck forum. So, will this Keep out a fox? Thanks a lot!