I love it! Very secure!!!Lots of trees or low bushy places to hide & no open aerial hawk space...that's why we crowded the chicken area w/ trees, popup canopies, patio roofs, recycled doghouses or makeshift huts, lawn furniture & tables, many makeshift bench/lean-to's, anything scattered around in open spaces so the hens didn't have to go far to a hiding spot. The trees & canopies & patio roofs are great to interfere w/ hawk aerial space. We took no chances at making it easy for Cooper's to have swooping aerial space on a running chicken especially since we aren't zoned for a protective flock rooster.
Even in the old days before our yard remodel we made the yard un-appealing to aerial predators!
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I have about 4,000 sf for a free range area. Hard to tarp all of that. However there are 9 trees, several berry bushes and random small coops and shelters to duck into.
For several years we had a heavy netting over the whole thing, but when it started rotting, it was very difficult to get out of the trees, so DH said no more to that idea.
We did have an eagle attack about 7 years ago (I think....time gets away from me), but never since. I hope to never go through that again. And the hawks we have here are pretty small. They go after the doves.