Not Türkiye. Turkey, Turkey, Turkey, Turkey. They just don’t want to be identified with the bird.
By that token we should call Poland, “Polska”.
Turkey decided to change the name and spelling of their country.
I don’t know why they did that.
There have been other changes made with no explanation. For example, Peking became Beijing, Bombay became Mumbai, Burma now has a different name. Congo became Zaire but I think I heard they went back to Congo.
Just in general, we’re just supposed to accept when they tell us they have changed the name of some geographic location