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The largest of the swallow family, the Purple Martin is famous both for its
song and its graceful flight. Entitled "America's Most Wanted Bird" by
the Nature Society, they are found in man-made Purple Martin houses in
backyards throughout most of the United States and Canada.
The Purple Martin is the first migratory bird to arrive in the New Orleans
area in late January. Their numbers increase continually throughout the
spring until they peak in the summer and begin their migration to Brazil
and Argentina for the winter. The last birds leave in November.
Being "cavity nesters", virtually all Purple Martins are raised in man-made
housing. Each one is someone's little bird. And each one represents someone's
investment in time, money and care.
In addition to their beautiful song and graceful flight, perhaps their
most useful attribute is that they feed only on flying insects. The
Purple Martin, and their swallow family, eat thousands of tons of insects
every year. They significantly reduce our "misery index", increase agricultural
yields, and greatly reduce the amounts of harmful pesticides needed for
insect control.
Local Purple Martins leave their houses at night and roost at the
Causeway for safety. It is estimated that the local birds come from more
than thirty miles away (or from the surrounding one thousand square mile
area). By coming to the Causeway and roosting over the water where there
are no predators, the birds have a greater chance of survival. During
spring and fall, great numbers of migratory Purple Martins benefit from
the safety of the Causeway roost.
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