I have a good friend with a decent sized mixed flock, and every spring she looses a few of hens to something viral we think. No wounds or anything, they just go down hill. Being a vet assistant I show up to visit and take a look. I can do merely the basics an yes I know the "Get the bird to a vet" routine but she lives in a place with only on vet that can do birds and she does not have the $120 to take the hen there. So here is what I know... Low tempiture than others Lethargic Limping inactive possible heavy breathing food in crop hobbles or limps when walks no sign on blood loss or enjury no sign of broken bones younger than a year rhode island red cross. but every spring she has silkies and others die up to 3 of them at a time. Any ideas of what it might be and what she can do till she can get the money.