from what i heard it is about the size of France, so assuming this is true (it could very well be the size of Spain or America or something of the sort) and if the world is the size of our own (i assume this due to the birds being able to fly normally as they do here, if anything it could be smaller, perhaps Venus or Mars sized, as horses can get airborn) and that the land to water ratio is also equal and that every species has a country (im including as many other mythical creatures as i can find) i'd say roughly 450