This is my first flock,5 Rhode Island Red chickens that we just got this summer. The girls are about 10 months old and have been very healthy. But this morning I found stool that was a yellow spongy and kind of firm and seemed like it had a outer skin layer. Curious, I used tweezers to pick it up and tear it open. It didn't look like there were worms in it but it was kind of chunky. I'm not sure which one of the girls it came from but they all were acting normal eating and drinking just fine. I've looked all over the Web for something similar and haven't found anything close.