wow this is a pretty old thread i didn't realize it was still active. unfortunatly the silkie in question passed away several weeks ago. not of marek's but of a stroke. he died peacefully i think. rest in peace, raven.
i'm a little worried about my five year old silkie boy. i know they sell vaccinations online, but are they just for chicks or can i vaccinate a flock consisting of 5 month to 5 year old chickens? thanks in advance!