I have no doubt but that it was a predator of sorts...I just didn't figure they'd be on to his presence the first night. And Esther, I think he was pen raised and just experiencing the great outdoors for the first time.
All of Florida isn't paved over as yet so we are still pretty rural and critters abound. I can't begin to tell you how many animals we have 'fed' to the creatures of the night until we learned enough on how to fortify their night quarters. The Guinea roosts in a live oak and the ostrich is big enough to fend for herself, but the rest are in fortified coops.<g>
A rough count of the losses would be nearly forty guineas ( 1 survivior), about the same number of chickens ( the newest batch are just starting to lay now) and maybe fifteeen or so ducks.
Predators I've seen on the property, not counting avians and owls did quite a bit of the killing, include fox, bobcat, coyote and Florida panther.