I would say cull, or at least do not use for breeding. If he is not robust by now, I would say not worth keeping!Question: out of 4 shipped lav/lav split chicks, I am down to 1 sad dotty little 8 month roo. They were the only of my 40ish chickens to die. Is this normal or did I just get a weak batch? Can I expect this little tottering roo to get more robust or should he be culled?