I cleaned his vent with warm water and a cotton swab, it did not appear to be pasty butt. I noticed that his poop is white diarrhea with a yellow tinge. Is this possibly pullorum disease? No other chicks in the flock appear to be showing symptoms.
He was motionless in the brooder, so I brought him inside and gave him drips of water. He spit it all back up. He mostly lays with his head on the ground while making the retching motion. He jumps up and chirps every few minutes.
Thanks in advance for any information or ideas you might have.