I have had Barred Rocks for 2 years. I have kept track and have average 3 1/2 eggs a week. I am going to replace them either this year or next and have been looking at different breeds that lay more eggs. There is so much conflicting information out there.. I have searched in the BYC forums and have concluded that the best brown egg layers are Rhode Island Reds and Black Sex Links. I have a 6 x 10 chicken coop on skids and a pen made of (6) 6 ft. tall panels that enclose about 1000 sq. ft. which I move every couple of weeks. I originally used bird netting to keep the hawks out and the chickens in but an ice storm took that down last year and I thought I would see what happened if I left it off. None of my chickens have flown out and I haven't lost any chickens to an aerial attack. From some of the post on BYC I get the impression that the flightiness of birds is kind of unpredictable by breed and influenced by the breeding stock. Any raisers of Black Sex Links and Rhode Island Reds have experience with this. Will your birds fly over a 6 ft. fence. I have read about clipping a wing and it looks simple enough. When you clip a wing they don't grow back until the next molt, is that correct. One more question would be if a chicken lays more eggs do they eat more feed. Do you come out ahead by getting chickens that lay more eggs per week or are you just paying for more feed to get them.