Things have been (thankfully) pretty quiet around here lately. We eventually determined that Cameo had been taken by an aerial predator (eagle? chickenhawk?), as unlikely as that sounds. It turns out she disappeared early in the morning, not at night as we'd originally thought. There was no place anywhere around the perimeter of the fence which was not absolutely muddy, and any predator on foot would have had to leave a track. The only evidence we could find appeared talon marks in the mud in the middle of the pasture. In any event, we have not lost any more lambs, and I suspect Cameo (who was the smallest lamb here, no bigger than a small house cat) was probably the largest thing the bird could have carried off.