A little help here please. I just finished my coop yesterday. I have welded wire running around the entire run, poultry netting at the top. I flattened the welded wire 1 ft outside onto the ground & secured with stakes. I really thought this thing was secure. Put my girls in it last night & this am 4 out of 8 are gone. I'm seeing feathers laying on the ground but not finding an area where something got in. What can I do to add more security so I don't lose any more chickens. I really don't want to invest in an electric fence as I've put a whole lot of money into building already. Help please!!!