Turkey poults are not chickens and are very capable of nibbling off parts of large wood chips. Without having grit in their system, they cannot grind it up and can develop blockage from it.
100°F is too hot. If you are measuring this as an air temperature, the bedding is much hotter. I start my newly hatched poults at 90°F measured at the bedding level. Some people start them at 95°F.
You did not mention what you are using for bedding. It is best not to have poults on wood...