Hello all! I've been lurking her for a few years now, learning all I can and preparing for the arrival of our chicks. We now have 30 beautiful baby birds, and I'm hoping you can help! They are 6 days old and arrived via postal service on Thursday. Three of the chicks had pasty butts on arrival, which we have been cleaning with cotton swabs dipped in warm water, then dabbing with a bit of oil. They have apple cider vinegar in their water, and their chick feed contains a mix of probiotics. This morning, one chick had what seemed like a huge amount of diarrhea pasted around the vent (really, the whole backside). We gently cleaned it all off to clear the vent, and it seems the chick has an exposed/open navel hole. Should we be concerned? Is there anything we should be doing to treat it? Otherwise, the chick seems active and is eating and drinking like all the others. I attached a picture of the chick's rear for reference. My chemist husband decided we needed nitrile gloves for butt-cleaning... Thank you in advance for any and all help! I'm grateful to become part of this community.