It is that auto-sexing aspect that made me decide on these. The day olds that the breeder had were very well marked and very obvious as to gender so I am hoping mine will be just as easy to tell apart. I am also buying some 'ready made' pullets....brahmas, cochins and orpingtons....but didn't want the stress or short term overcrowding that comes with hatching enough eggs to get those pullets and then dealing with the inevitable roos, weeks down the line when you've loved and cared for them. I have done that in the past but had a lot more room to do it and after being forced to cull five stunning, five month old boys that I couldn't home, swore I'd never do it again. I get very attached to my birds, very quickly. They are pets for me, much loved ones, nothing more or less (I don't even eat eggs!!) so killing those boys broke my heart. I realise I will have to do exactly the same with any of these CCL that hatch as roos but it is so much easier to do that on day one, before you get truly attached and while the actual 'doing' bit is so quick and simple.