this question was started in another thread, which is becoming crowded and over run with numerous unrelated questions. so i thought id start a new thread giving my experience with the ISA Brown. here are a couple of links to them. the hatchery is where i obtained mine: http://www.townlinehatchery.com/hatcherychicks.htm this link gives you a little more knowledge of them: http://www.morrishatchery.com/mngmt_guides/ISA Brown Guide- my experence with them is good and bad. they started laying around the 5 month period. couple started as early as 4 months. and these were some of the best layers ive ever known. it was with these hens i can honestly report i hit over 100% laying for weeks on end. i even had 5 different days in their first season i got 16 eggs outa 15 hens in one day. and two days i got 17 eggs outa 15 hens. most scoff at this ability but its true. they did even better than my flock of golden comets which i really did think alot of. BUT when the ISA's hit a yr and half, they still layed most every day, but, their eggs got paper thin, every day i had one or two bust eggs and the nests were a mess. eggs a mess and most all of them were hard to wash b/c they were so thin. i finally got sick of it. sold them off cheap as old layers. and got a new flock of golden comets and some red sexlinks. ive been very satisfied with the comets and reds. i practice good methods of feeding. i have all that oyster shell, grit and other suppliments on hand in free feeders, plus all my hens are free ranging. so only conclusion i could come up with was the ISA were only good for a season or so worth of laying and then their systems was burned out/up. im curious as to others experiences and/or opinions. so please post up.