Hello

am hoping you can give me some advice! recently added some new hens to our flock and within a couple of days a bluebell (new girls) seemed very withdrawn and sleepy. she did however eat and drink. I went back to the fowl trust and asked for some advice to which they said it could be stress of moving.
yesterday (a week since buying) she developed a sticky eye and when I checked her beak I found some brown goo there too.
today one of the new white stars also has sticky eye...
my old flock never had any illnesses at all so this is really new to me and I am worried and trying to work out how to isolate the poorly two now

is this something that the vet needs to check or can a shop bought preperation like poultry spice help?
thanks
plums xx