That's not predator proof.
A raccoon could easily scale the fence, lift the tarp and wipe out the flock. It happens all the time.
What kind of wire is the run made from?
Can you post pictures?
What is your chicken coop made out of? Mine is a coated wire mesh. If you enlarge pic I attached earlier you can see what it is. In the past we have used outdoor dog pen panels w/tarp roof and overhead netting. It worked well. We are trying to redo our animal enclosures and this is what my kids purchased.Chicken wire is not predator proof.
A dog, fox, coon, weasel, etc. can easily tear through that. You really need to upgrade before you lose your flock.
My coop is a converted shed with a 28'x12' attached run plus a 4'x16' annex on the back with a solid roof, 1/2" hardware cloth walls and 1/2" HC covering all the windows openings and vents with a 2' predator apron all the way around it, all plunked down inside a 1/3 acre pen surrounded by 42" high poultry netting powered with a 10,000 volt charger.What is your chicken coop made out of?