A vital key to getting Purple Martins to select your site is LOCATION.
(Though there are many exceptions in real life.)
1. Housing should be at LEAST 40 feet from trees...preferably more, though in the 'South' it is said that Martins are not as preoccupied with this.
2. Housing should be no further than 120 feet from your home. And as close as 30 feet. My philosophy is keep it on the closer side. You will enjoy your purple martins more and they actually benefit from the added protection we provide.
3. The house itself should be AT LEAST 10 feet up in the air. Preferably 15 feet. Though once established, within a colony, purple martins will tolerate lower heights.
4.Keep shrubbery away from the bottom of housing.
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