Without reading any of the other replies, I'd have to say a big, "no it won't keep them in." I'm speaking from my own personal experience. I've clipped wings, got them in a 5-1/2 ft chainlink fence and covered, with the exception of the cherry tree, with bird netting looped over PVC pipe arches. I still had one of my australorps get out just last week, via the cherry tree I think, up and over the henhouse, into the neighbor's yard next door and got herself shot and killed. Lovely neighbor I have, right?