I just got my baby chicks yesterday morning from McMurray. None of the 28 had a pasty butt. However, this morning I notice two of the yellow chicks had some stuff stuck to their butt area, but not directly around the vent - just the tips of their fuzz/feathers. I didn't have time to check the non-yellow ones before work, but I will at lunch. Is there a time period in which I can stop worrying about them pasting up, like week old? Or do I need to be checking them daily until they're feathered out? And I read its not good to handle them so much the first couple of days - how does that work for the dark colored chicks? I have to pick them up to check their butts, or at least touch them. Wouldn't the stress trigger pasting up?