Sorry to sound stupid, but what is EYP? This is my first year having chickens. I have four RIR and two barred rock, they are about thirteen weeks along now. I love checking on them and discovered they love strawberries, blueberries, and frozen cherries.
Not stupid at all that's why your here!
Egg Yolk Peritonitis.
With my reading the easiest explanation is an egg yolk went were it shouldn't. With no way to get it out it causes infection and other problems.
There is no cure. I'm trying treat her swollen belly to make her comfortable until I think her quality of life is no good.
This link is to one of many threads on the topic.
https://www.backyardchickens.com/t/526089/egg-yolk-peritonitis
This is another I found helpful. Was getting answers from the starter even though the thread started years ago.
https://www.backyardchickens.com/t/...est-in-peace-olivia-11-5-10/150#post_17088659
I'm not happy to tell you RIRs seem to be susceptible to this condition. Not that your girls will get it but I'd rather prepare you... I'm not sure how old my girl is but it seems to hit once they are a little older. You got them young. I would recommend getting them used to being handled as much as you can. That way you will notice anything "off" about them right away.
Good luck and enjoy your girls!
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