When 2 of my girls were sitting on eggs they were side by side and a big blk snake went into there house, well It was less than 1 min before he was back outside, but some are more fearless than others, when my girl was sitting on a goose egg, a blk. snake came in to her nest and she pitched a fit but never attacked him, if I hadn't heard her flalling around in there he probably would have gotten that egg, now what he would have done with is debatable. I've seen them swallow a duck egg and thats something to behold, I'm not sure if they could swallow a goose egg. and we have big blk snakes.