Purple Martins (Progne subis) are a well loved migrant in South Georgia. The largest swallows in North America, they have long been welcome on farms for their ability to consume thousands of insects. Gourd trees are often erected on farms and in open backyards as a means of attracting the gregarious birds, who live and nest in cavities. I found these as I was photographing the Willcox house.
The Purple Martin Conservation Association is dedicated to promoting and protecting these wonderful birds.