Purple Martin Migration Map 2010 - 2011 
Map Updated:    

                                                                                                                                                                       Scout Arrival Date Window
                                                                                                                                                                       From Historical Data Collected

                                                 Gourd Country  →→→→→→→→→→
( Studies show gourds do better out west )


Coates 12 Room

Bo Eleven Gourds

Goliad by Lonestar

Trio Castle's

Are you looking to attract and house Purple Martins?
The first thing you need to know is whether you live within the breeding range of Progne subis subis - the Purple Martin that is attracted to man built housing. In the United States, this is typically the eastern ½ of the country.

When should you be ready?
The map also indicates when you can expect mature adult martins to return to established breeding sites. Sub-adult martins, those in their first breeding years, tend to follow the mature adults 3-6 weeks later.

Getting Ready for your Colony to Return:
If you have an established colony, you should be ready for the mature adults  (within the red time lines shown on the map). However, if you are establishing a new colony - wait for the arrival of the sub-adults and don’t open your housing for another 3-6 weeks. Waiting will help prevent problems with sparrows, starlings and other birds. 

If birds other than Purple Martins try to nest in your house, lower the house and remove the nest – temporarily plugging the entry holes if necessary to keep them from returning.

How to use our Migration Map?
Our Purple Martin Map is a perfect way to track your  colony. We also update the scout and sub adult wave image on our tracking map regularly based on reports called in to us. Double Click over each sighting to view further details and let us know when your Martins arrive!

Report your Martin Sighting!