One of the first signs of fall's approach is the disappearance of Barn Swallows. They arrive each spring and build their cup shaped nests under bridges and the eaves of buildings. All summer long we delight in their aerial antics while they feed on our bountiful supply of insects.
By month's end, their families raised, they have begun their long vacation flight to Central and South America. Those of us who winter in Central Iowa are left to ponder on what the bird has learned that we have not.
We are left to await their return in the spring. Fortunately Barn Swallows are a gift that keeps on giving. They have a tendency to return to the same nesting sites each year.
T-R PHOTO BY CRAIG MOON
A Barn Swallow is shown in flight recently in Marshalltown.