The Romans admired swallows and although believing the disappearing birds hunkered down for the winter, they celebrated their return as being a harbinger of Spring. The Latin term for swallow, hirundo, became the root of the scientific family Hirundininae, a family that includes Purple Martins and other swallows known for using their squat beaks to feed on flying insects while zipping along at 20 mph.
The scientific name for Purple Martin, Progne subis, draws upon some harsh ancient Greek mythology. Progne, a princess in Athens, was changed into a swallow after killing her own son in revenge against her husband who himself had committed a despicable act with her sister, Philomela. Interestingly, Philomela was also changed into a swallow and Progne’s husband was changed into a Hoopoe (Upupa epops), itself a stunning crested bird that is depicted on the walls of pyramids.
“Conscious of her fixed times” the Purple Martins returning to their ancestral breeding sites on the East Coast of North America are now almost completely dependent upon manmade nesting facilities.
The most common and seemingly ubiquitous is the classic Purple Martin Condo, being a structure containing maybe 4 or maybe many more “units”, each with a suitable sized access hole. These “colonial” nesting sites are particularly enticing to older males who find the abundance of females to be quiet exhilarating.
Purple Martin Condos or multi unit nesting houses are usually mounted on a pole in the center of fields and other expanses of open space, and usually within a reasonable distance to water.
The condo is usually white with green or red trim, and will have holes facing all four directions. The supporting pole usually runs through the middle of the condo and the condo is hoisted to the top of the pole using a pulley system. It is important to clean and maintain the condo so having an easy way to raise and lower it is very important. The bigger units can be heavy and require a sturdy pole, strong rope and a helping hand when moving it up and down.
Once the Martins are in residence, the condo should be left undisturbed except for urgent maintenance such as could arise following a serious storm.
Another style of Purple Martin house that is inexpensive and becoming increasingly popular takes the form of a hanging gourd. These gourds are now manufactured in plastic and designed with a suitable hole drilled on the side and are hung from wires like laundry on a clothes line. The number of gourds is limited only by budget.
Hanging gourds can be natural or manmade. The gourds are usually about 8 inches or more across at the widest, and may be hung in various configurations. Gourds may be hung with the stem up or sideways or stem down. A natural gourd bought at a market must first be cleaned out and allowed to dry. The hole should be 2 inches in diameter and should face out a little below horizontal so as to keep the inside dry yet still give the bird a clear run. The gourds are usually painted white so as to reflect the sun.
Gourds need not be strung out in a straight line. Some are hung in formations like hanging fruit on a tree. The gourds should be at least 20 feet off the ground.
At the end of the season after the final brood of four or five young have fledged and all the birds have left for their wintering grounds, the Condos and the gourds should be taken down, cleaned with bleach, maintained, and then, depending on the local climate, it may also make sense to just put everything away for the winter. Preparing for the next season should begin in March, and all nesting equipment should be back in place by April 1, ready for the return of the scouts.
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