I have a small slab type stone in my garden under which lies an ant colony. When I lift the slab I see these eggs . It's interesting to note the variation in size of the eggs. Anyway, the ants mobilize to protect the eggs as soon as the stone is lifted. Within about 30 seconds they have moved all the eggs down the holes. It is fascinating to watch, as the smallest eggs are the same size as the ants, and the larger eggs are double the ants' size. But they work together and get those precious eggs out of harm's way at great speed. I'm not generally fond of ants, but I leave this colony alone as I've developed a soft spot for them over the years.