In order for the mud nests of barn swallows to adhere, the wall or concrete bridge they are attached to much have a slight ledge or a somewhat rough surface. Frequently a nail or the molding over a door will suffice.
Swallows help control populations of the many flying insects they eat. Their peak presence in our state from April through September coincides with the time when insects are abundant and available for them to eat and to feed to their young.
Barn swallows build cup-shaped nests out of mud they collect from muddy pools or stream banks. They strengthen the structure by mixing dried grasses into the mud. The nests are lined with plant materials and feathers.
Although they originally built their nests in caves and under overhanging cliffs, today barn swallows almost always build their nests on human-built structures. They are a familiar sight in agricultural areas.
A summer resident in Missouri, the cerulean warbler is more common in the southeastern Ozarks but rare elsewhere in the state. Its numbers are small and declining, and for that reason our nation may soon classify it as endangered.
MDC protects and manages Missouri's fish, forest, and wildlife resources. We also facilitate your participation in resource-management activities, and we provide opportunities for you to use, enjoy and learn about nature. Read more about our mission.