Last week I hatched 22 chicks (well 15 in the incubator and 7 from a hen). I gave the hen 10 to look after and so I have 12 in a brooder. I also purchased 5 chicks large breed chicks in line with my breeder program and in order to introduce some new blood into the flock. I generally quarantine new birds when I am offered them or purchase before integrating them with the main flock. Would it be sensible to do the same with the chicks or are there less problems mixing purchased and home raised chicks?