The diet of the wren is largely based on what they can find on the ground. Wrens are known for their preference for eating insects, but they do differ from other insectivores in a unique way. While most birds prefer to eat insects that they can catch during flight, wrens are more interested in the insects that are crawling on the ground. This adorable bird has no qualms about gobbling up spiders, snails, and slugs. If they find it scurrying around on the ground, there is a good chance that a wren will snatch it up. In fact, these unique birds are even known to scavenge spiderwebs for meals.
Though wrens prefer insects when the weather allows for it, these birds are also relatively passionate about berries. Wrens will happily pluck berries off of plants for a snack, particularly during colder times when bugs are in short supply. Unlike some birds that turn their nose up at treats, wrens also enjoy eating peanut butter when it is made available to them.