I have my first flock and after some research decided on SL Wyandottes. As expected some hens have really good size and width and some are scrawny little things. So my question is a pretty simple one; to get a bigger flock I just keep hatching eggs and cull all the smaller/ scrawnier ones right? OR should I get a bigger breed and cross them? Stupid question, I just don't want to end up making a mistake; like chickens that don't lay well or get flip-over or something weird... Thanks!