I received my splash Silkies last Friday. I ordered 15 and they sent 16, I lost 1 yesterday not sure exactly why. I’ve had a few pasty butts to clean up every day, it’s not covering vent just sticking to fluff. Never dealt with this on any of my own hatched chicks so chalking it up to shipping stress. I’ve turned the heat down and added a little tiny bit of grit too. Curious how you sexed 5 week old Silkies? In the picture I have 4 of my serama chicks in with them as they were a week older but still smaller.