On the first day of my recent trip to southwestern Montana I came across two Willets (Tringa semipalmata) near a lake shore, one was an adult and one was a juvenile. There were plenty of bugs around, the horse flies bit me up pretty good and they even made me miss a few shots because I had to keep swatting them off of my skin. There were insects that the Willets were hunting and eating, primarily they seemed to be focused on dragonfly nymphs.
I thought this image of the juvenile Willet and a Boreal Bluet (Enallagma boreale) damselfly was interesting, although it appears the shorebird is attempting to catch the damselfly, I believe the Bluet was just flying by as the Willet searched for food in the water.
More Willet images