The maps are the heart of this Website. Using the maps is easy and all of the available information about known Michigan Purple Martin housing sites is found by using these maps. The first map is a satellite view of the State of Michigan. This map allows you to get a good graphic representation of where known Purple Martin housing is located throughout the state. Each dot on this map represents a known housing site. The dots are color coded to indicate the status of each site:

- Black dot indicates an active colony as of the last, or current, nesting season.

- Red dot indicates available housing that has never been occupied.

- Yellow dot indicates a site which has had breeding Martins, but no longer does.

A nine-section grid is superimposed over the main map of Michigan. If you are interested in a certain section of the state a simple mouse click on the corresponding grid section will take you to an expanded view of that grid section. These maps show details like cities, main roads, large rivers and bodies of water, etc. The same color coded dot scheme is used on these maps as was used on the main map. These maps are useful in locating individual sites which you are interested in. If you "hover" your cursor over a specific dot a balloon will appear with a first name and last initial of the owner of that site. Clicking on a specific dot will take you to a page that contains any available information about that site. Some site owners will not want some information published here. Others will have history and other interesting information about their site. Any information about individual sites is obtained through our Member Data Form.