Chicks are far tougher than poults. Adult turkeys are far tougher than chickens. (not talking about eating them at this point!)
Here, backyard turkey breeders keep them in small cages, with heating, plastic up around to keep the wind off, roof to rain off, up off the ground, of course, so they can´t pick up anything from the ground, and also so they don´t get wet with the dew. At 3 months they let them go out with other birds and they usually do ok. A lot of them use a chicken to hatch and raise them until they don´t need her anymore. This has advantages in that, as long as the chicken is healthy, she teaches them to eat and drink, and keeps them warm. Poor chickens have to stay in a tiny cage with these babies for at least a month, though. I´ve had turkeys hatch and raise their own, and they´re generally good mums, but the babies do have a high mortality rate this way, getting damp, chilled, etc...
Have you got onto the turkey thread? someone there may be able to help more.