Hi all! I'm trying to figure out what's wrong with my new chickens. Liquid poop and lethargy. Three are very underweight. The seller says they were fine at her house. When I got home 45 min after picking them up, they were pooping like that. Her explanation is that the damp air from the ride home made them sick. They were in a wire dog crate, which was covered on three sides with a tarp, blocking the wind and rain, but allowing ventilation. Could that really have done it?