You get out your slingshot and begin hitting the marauding creatures. But you have to be careful. If you hit an egg-carrying bird, it drops the egg and you have to act fast to catch it before it hits the ground and return it to a nest. At the same time, you have to watch for snakes that may be sneaking up to nests and gobbling eggs. If you can protect the eggs long enough, you can take them to another nesting site.