Purple Martins are the largest swallow in Ohio. Nesting in colonies, usually martin boxes or gourds supplied by people, the birds are a sound of the summer. As the martins ready themselves for migration to Brazil, they will gather by the thousands around lakes and wetland habitats. Portage Lakes in Summit County is one of the areas in which the birds congregate. This program shares information about the life history of the martins as well as the importance of the habitats the birds need prior to migration as well as in South America.