Well maybe if you move the remaining chick to a different spot away from woods or things a fox could hide in that could help.
It would not. Foxes will travel through open fields to attack chickens. They are wily and they are fast.
You were thinking since it was sold by "professionals" they must know what they are doing. Sadly, with chicken coops, that is very rarely true. Lots of money wasted by people who then find they need to build another coop.
My coop is secure and I don't worry about them at night, but they free range all day so there is always a chance of predators coming in.
Yep and predators like coons and fox do NOT hunt soley, maybe not even primarily, at night. I fenced an acre, original plan was to keep a dog IN and for the dog to keep predators OUT. Dog didn't work out (spouse) but no predator attacks for 2 years until 2 months ago when a fox came into the area and dragged off my best layer from behind the barn in broad daylight. This was a full month later than I had fox attacks before I had decent fencing in prior years. I followed the trail of feathers to where it got her through the 6"x6" field fence and at the edge of the woods. Apparently a fox can get through a 5" opening. I guess I was lucky not to have lost one the prior 2 years. 2 days later I came out of the barn about 5 PM just as the fox was going after 3 hens near the barn. All I saw was the flash of red as it sped off, by the time I got through the gate it was already on the other side of the south fence, made of cattle panels, 200' away. Had I been seconds later it would have killed another hen even if it didn't have time to carry it off. I had already ordered the 48"x164' Premier 1 electronet and put it up the next day when it arrived.
I've put 2x4 no climb horse fence on the span the fox originally came through. I need to replace the field fence on the 12' gate in that same span with the no climb. And I still have cattle panels along the south span that I can't stretch fence on because there are no braced posts, it has to run around a tree with lots of rocks around it, still pondering that one. In the meantime the girls are now confined to a much smaller area, the net is connected to the hot wire that runs along the top of the perimeter fence. They aren't real happy.
Relocation of many critters, including foxes, raccoons, and opossums, is only allowed on your property, or on private property with landowner permission within your same county, in many states, including mine.
True in my state as well. NO relocating off your property and pretty much no one has near enough property to get a predator far enough away that they won't just come right back, miles.
Photo shows the coop for free range adults on right and flight pen for adolescents on left
Good IF you have no weasels. They will pop right through that 2x4 fencing and take out the juvies.