I have that DE gives my dark ( RIR banties ) and nice splash lavender colour.lol.I have a flock of around 30ish sparrows that live here year round. They're in and out of the run all the time, plus the scrub jays, doves, etc. No parasites.
Wood ash is just that, ashes from my wood stove. When it's dry I put them in the run, but during the mud season I pick a spot in the coop and use that. They will turn your light colored birds interesting colors!
I could trade mark some 'fake' Rhode Island Red Lavender splash chickens.lol.
I will burn some scrap wood we have tomorrow. Does is last well or do you need a heap?
So I can use human de-licer on my chickens?i did this with one bottle about two years ago. I had an extra bottle of lice shampoo, for people its the same stuff, from a mission trip we had taken so i mixed it in a used windex bottle, cleaned out of course, and i sprayed it on the roosts just before dark, didnt have any lice but i thought well i got this extra bottle why not use it. So you might try something like that.