We have some 5 day old pullets and I noticed that one of them today scratched a little bowl shape into the pine shavings in the brooder and appeared to be practicing dust bathing. Should I put out a bowl of dust bath stuff for them at this age? And what should I put in it? Also, regarding scratching, should they get any scratch now? I thought they had to be older, but the chicks are scratching a lot. Should I just throw some of their chick starter into the pine for them to scratch for? Do I have to worry about them ingesting any of the pine?