Do purple Martins kill mosquitoes

Contrary to popular belief, the thought that Purple Martins reduce mosquito population was brought up to promote the products that went along with the birds such as housing, and gourds.

http://www.purplemartin.org/update/MosCont.html is research that was conducted to back it up.

But don't get me wrong, Martins have many advantages. Just hearing that beautiful song they produce makes it worthwhile to attract Martins to your backyard.