Blue-winged Warbler (Vermivora pinus)

My first sighting of this hard to capture warbler!

Found in brushy, second-growth and open woods.

A summer resident in Illinois, winters in the southern states.
Length 4.75  Wingspan 7.5"  Weight .3oz
Song - Harsh buzzy beee-BZZZZZ
or a long, high buzz with stuttering notes tsi tsi tsi tsi zweeeee zt zt zt
Call - sharp, dry snik or chik  in flight dzit zzip