Why is the birds' feast called 'the supper of the great God'?

Les explains that the birds in view are the fowls that fly in the midst of heaven, meaning the birds in the air around us, not birds in the throne room. These vultures and scavenger birds are told to gather to the supper of the great God so they can eat the flesh of kings, captains, mighty men, horses, riders, and all men, both free and bond, small and great. This great conflagration will fall upon the assembled armies, especially in the Middle East, and the birds of prey and scavengers will come as a cleansing effect, getting the earth ready for the soon appearance of the kingdom. Les notes that all the Old Testament speaks of this very event when the scavenger birds will feast on these gathered armies, and that is why it is called the supper of the great God. He also mentions hearing that a major Middle Eastern scavenger bird normally laid two eggs and had one brood, but later reports suggested it was multiplying at almost double the normal rate, though he treats such reports carefully.