A house wren was observed feeding “500 spiders and caterpillars to its young during one summer afternoon,” according to the book Gardening Without Poisons.
Why, for example, does this caterpillar start violently thrashing about when another insect gets close to it and those white cocoons that it seems to be standing guard over?
The caterpillars’ consumption of large quantities of food is vital, not only for growth during their larva stage but also for nourishment when they become adults.