My poults are 3 weeks old on Saturday and I moved them outside and they have not had any heat. They are upset in regards to being in an unfamiliar place but are doing well. They hatched with 2 guinea keets and have been raised with them, so that helped with them learning to eat and drink and such. One of the turkeys hatched with some yolk and a very exposed navel. He slept for two days straight. He is my baby. The other is much bigger and independent; a leader. So, you will have variation, just like with chicks, in personality and hardiness. You are asking a very broad, general question. So the broad, general question is that yes they are more fragile in comparison to chicks (or keets). They do take longer to learn basic things, like was already mentioned, and they are slower to feather out, in my limited experience.
You use the past tense on your last question. Does that mean the turkey died?