A number of bacterial and viral infections occur in wild turkeys, but diseases and parasites are rarely limiting factors affecting turkey populationsanywhere within their range. In fact, no wild turkeys have ever been linked to disease outbreaks in domestic poultry or cattle.
Gandalf is an Immortal Angelic being of the race of the Ainur , there are two types of the Ainur , the Valar and the Maiar which , the Valar are the greater Ainu , the Maiar are the lesser Ainu , Gandalf is a Maia , The Valar have their own groups of the Maiar , Gandalf 's name in Valinor was Olorin where the vast majority of the Ainur are inhabited ...
Gandalf's role and importance was substantially increased in the conception of The Lord of the Rings, and in a letter of 1954, Tolkien refers to Gandalf as an  angel incarnate. In the same letter Tolkien states he was given the form of an old man in order to limit his powers on Earth.