I am so sorry and i don't want to be critical but that setup is woefully inadequate to house that many chickens and to protect them. There are lots of ideas for inexpensive coop/run setups in the coop forum. In the meantime hardware cloth is a must NOW. Your predator will be back.
I can’t think of a gentle way to say this. If you plan on keeping those chickens in that bitty cage, “forever more” won’t be very long. If your current predator doesn’t wipe them out, they will likely injure or kill each other when they outgrow that little space. Over crowded chickens can develop some nasty habits. One of those habits is feather picking. That seems harmless enough until it turns into an open wound. An injured chicken has nowhere to escape in that tiny cage, so the others would keep pecking at the wounds until it’s so badly injured it dies. Then they will eat the carcass. Cannibalism in a flock is an ugly thing to deal with.
I don’t know where that cage is located, but if it’s not fastened down, a determined predator will easily knock it over. If you can’t provide a larger, secure coop with an attached run, the kindest thing for you to do for your chickens would be to give them to someone who can.
Well said!