I currently have 9 full grown chickens and would love to get more. I plan on getting some more baby chicks soon but I have a few questions.
All 9 currently live in the same cage and when I get more chicks soon, i plan on keeping them separate for atleast 3 months. One of my questions is, what is the risks of newer chickens raised from little chicks giving or getting diseases from the other 9? Is it best to get vaccinated chicks or non vaccinated chicks (for mareks that is)?
What are some helpful techniques to prevent diseases and sicknesses from spreading when getting new chicks?
[GOD bless!] 
All 9 currently live in the same cage and when I get more chicks soon, i plan on keeping them separate for atleast 3 months. One of my questions is, what is the risks of newer chickens raised from little chicks giving or getting diseases from the other 9? Is it best to get vaccinated chicks or non vaccinated chicks (for mareks that is)?
What are some helpful techniques to prevent diseases and sicknesses from spreading when getting new chicks?

