I don't know what it does to chickens, but it isn't good for your smokestack/chimney. Leaves heavy creosote residue, which leads to the fire dept. seeing you in your jammies in the middle of the night. Been there, done that, did not get the T-shirt- but did have to move immediately, house gone!
I use just barely enough newspaper to get it started the first day, but that's it. I learned the hard way!
Thanks for the warning! I do not burn paper trash in my fireplace, but do use lots newspaper frequently to get fire started almost every day. Will be sure to check the chimney asap!
As for the ash, this is fantastic! It would seem to be awfully 'dirty' for a bath, like sticking to their body and feathers, but I will use it in thier coop only for the winter and mix with something else. Any suggestions? I have sand, mulch and some wet dirt (with lots of clay) that I could dry by the fire.