Captured this image a few days ago in a local grassland preserve in the late afternoon. I counted about five in a bush near this perched one all performing what appeared to be a feeding frenzy. For that matter a number of Kingbirds nearby were doing roughly the same thing. The Flycatchers were taking off straight up approximately 6 feet and dropping right back down. Wasn't until I got home and looked closely to see tiny flying insects in front of open beaks, confirming what it appeared to be. C&C welcome.
D500, Sigma 150-600mm C @ 550mm, 1/2000s, f/6.3, HH, ISO 2000.
Geoffrey