There are several Web sites dedicated to the purple martin. These are some of the most informative.
Purple Martin Conservation Association – Join their organization and receive their excellent quarterly publication.
About the Author
Sam Crowe
Sam is the founder of Birdzilla.com. He has been birding for over 30 years and has a world list of over 2000 species. He has served as treasurer of the Texas Ornithological Society, Sanctuary Chair of Dallas Audubon, Editor of the Cornell Lab of Ornithology's "All About Birds" web site and as a contributing editor for Birding Business magazine. Many of his photographs and videos can be found on the site.