Explains the importance of nestboxes birdhouses for the survival of this species. The Purple Martin is a beautiful songbird, the largest North American swallow and the only species of martins on this continent. While spending a portion of every year in the backyards of those who are devoted to it, this steely and iridescent blueblack bird also spends its winters in the Amazon River basin and as far south as the São Paulo State in Brazil. Each spring, flying on the southern edge of warm weather advancement, Purple Martins faithfully return to the backyards of their landlords the people who put up martin housing in North America for their breeding season.

Website: http://www.purplemartins.com/About-Purple-Martins.htm