Why not raise them on shavings? and typically i raise chicks and ducklings on hay.
Ducks are one thing, turkey polts are another altogether !
Turkey polts, from one day to the next, and from hatch to hatch, can vary in what seems to be stupidity.
I hatched several settings during the year, and one group would do OK and the next would eat nothing but shavings & die.
I have been told by top turkey raisers to rear them on sand for that reason.
Seems once one eats shavings, the rest follow suit and then taken off the shavings and put on sand they can actually be stupid enough to starve to death....
Sand on the other hand is safe, non-flammable and easy to deal with.
It is also something baby birds need to digest.
I use play sand, some folks just use dirt dug up out of the yard.
Last spring someone else on this thread was raising polts and had the same issue of one after another dropping dead full of shavings.
Hay is ok as it is too hard if not impossible for the polts to swallow it.
Sand has worked well for me, for ducklings, too.
They can dabble as much as they want, and the sand allows the water to sort of seep down & away from the birds.
It has to be set up correctly...sand in a rubbermaid tub will not work well for ducks.
Sand several inches thick over dirt works great.
Ducklings can be a chore !