What do the scavenger birds eat at the supper of the great God?

Les explains that these are the fowls that fly in the midst of heaven, not birds in the throne room, but the birds in the atmosphere around us. They are told to gather themselves together to the supper of the great God. The pronoun refers to these birds, these vultures, these scavenger birds, and they eat the flesh of kings and captains, the flesh of mighty men, the flesh of horses and them that sit on them, and the flesh of all men, both free and bond, both small and great. In other words, this great conflagration will fall upon the assembled armies, especially in the Middle East, and these birds of prey and scavengers will come and have a sort of cleansing effect, getting the earth ready for the soon appearance of the kingdom. All the Old Testament speaks of this event when the scavenger birds feast on these gathered armies, and that is why it is called the supper of the great God. Les also mentions hearing that a major scavenger bird in the Middle East normally laid only two eggs at a time and usually had one brood, producing only two offspring a year, but later reports said that same species had doubled and was laying four eggs; he takes such reports with a grain of salt, though it is more or less documented that this species is multiplying at almost double normal in the Middle East.