hiya,over the last 2 days ive seen a couple of bits of what looks like blood in my chickens poop.im not sure which one it is as i have 9 and theyve all got the run of the back garden.they all seem healthy in themselves,eating drinking and definately pooping,ive got 3hens who are about 21weeks,the guy doesnt know exactly how old,we got them a month ago and was told theyre between 18 and 21weeks,ones laying ,but the other 2 arent could they be the culprits?is this somthing that sometimes happens??x