MIKE MOSS SAYS: Sandy, Glad you enjoyed seeing the loops I showed the other morning. In case you're interested, I had also posted a "WeatherCenter Blog" entry about the Purple Martins and their radar "roost rings" a couple of weeks ago, that you can see at
http://www.wral.com/weather/blog/1028424/ (look for "Radar that's for the Birds")
You also sent along a link to your website with some radar loops and video that shows the activity at the Mann's Harbor roost. For others who might be ineterested in learning more or seeing those products, just visit
http://www.entrancesbysandy.com/id177.htm