Backstory, I ordered 6 splash and 9 blue Cochins and 1 male EE from Cackle Hatchery back in April. ALL of the splash died. All but 4 of the blues died. The EE is fine. I eventually contacted the company because the blues were actually barred So they resent my order. Several of these birds had prolapsed vents, or by the time I found them, pecked out vents. Fast forward...I have my new order. They are 4 weeks old. I just found a splash with a protruding vent. She is pooping a lot and eating a little. I gave her a bath and pushed it back it but when she pooped it came back out. Any suggestions? Also, what causes this? I have 70 chickens and have had chickens for several years. I have NEVER had this issue.