Carolina wrens are not bothered by people being in close proximity to their nest. They will continue to bring in insects even while we are sitting out on the porch. Birds that are exclusively insectivores migrate because of the lack of insects in winter, while wrens are here year-round because of their varied diet which includes seeds and nuts. We feed the birds throughout the year and not just in the winter. It provides a "safety net" for those times when other sources of food might be scarce for whatever reason. Another advantage is that the parents will bring the young to the feeder, training the next generation to accept the "unnatural" source of food. If they need the addition to their diet, it is there for them.
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