“Genyornis was two meters tall and 200 kilos. We don’t know exactly what it would have looked like because it’s been dead for a while and there are few skeletal remains available. It was certainly a flightless bird with some characteristics shared with ostriches, like the big chest and small wings, but it would have looked more like a big goose or duck,” The evidence that humans were eating these large eggs comes from burnt eggshells found among the remains of ancient cultures. Scientists studying these sites find two different types of eggshells, one of which comes from emus and...