ok, yes I am a newbie after 20 years of not having birds. I now have a dozen that I got from Tractor Supply this spring and they are now 17 weeks old. finally laying!!! its so nice to have fresh eggs again. Anyway, I found out that they never had any kind of vaccinations. I have heard that we MUST vaccinate our chicks. Is this true? My one little Roo seems to have had runny poo for a few weeks. Looks like water and runny brown. There is no white stuff at all. Now it seems that quite a few have started to get diarrhea or runny poos too. Could i have something going around? or is it just to much 'junk food'?????