The Barn Swallow is a bird that has a unique type of nest. It makes its nest out of mud and anything else it can find. It will place the next in structures such as barns, bridges and garages. Barn swallows will often follow mowers or tractors to eat the flushed out insects in mid-air! These birds are easily identified by their iridescent blue head. They are very fast fliers. The picture is courtesy of Google images.