I just brought home 3 pullets and a cockerel from a trusted breeder. I have them in a quarantine pen with good seperation from the other birds. I would like to intergrate them as soon as possible and was thinking that I could put one of the cull pullets from my flock in with them to be sure they are not carring anything that would affect my birds. 3 weeks seem enough quarartine time if I do that?? thanks. ....stan