You can use all of the above posted substrate (paper towel, cloth towel, pine shavings etc), which I have done.
I am hleping a friend with a couple of Sebrights plus Pekin duck (not sure why I said yes--its time for them to go to her house and she asked if I had ideas on how to sneak them in to the yard without her husband knowing becasue she forgot to mention the purchase to him--it all becomes clear
) and I have moved over to puppy pee pads becasue the duck is soooo messsssy!
The last time I brooded chicks I ended up going with a mixtre of sand and peatmoss and quite liked the substrate. I think I'll stick with that over pine shavings if I do it again.
I am hleping a friend with a couple of Sebrights plus Pekin duck (not sure why I said yes--its time for them to go to her house and she asked if I had ideas on how to sneak them in to the yard without her husband knowing becasue she forgot to mention the purchase to him--it all becomes clear

The last time I brooded chicks I ended up going with a mixtre of sand and peatmoss and quite liked the substrate. I think I'll stick with that over pine shavings if I do it again.