I found a Twitter thread on just this subject - enlighteningsrainhoutx wrote:Martins flying out from roosting headed out the get their fill of mosquitos.unome wrote:question for anyone who can answer - what causes the outflow-like circle, as on this morning's radar near Hull Airport/Sugarland ?
https://twitter.com/RadarAndStuff/statu ... 0054988800
also interesting related posts on this Twitter feed https://twitter.com/Aero_Eco