This male common yellow throated warbler was photographed at Green Valley Forest Preserve In Naperville, Illinois (USA) with a Canon 7D DSLR and 100-400 mm Lens. Never saw his nest, but he was very busy bringing a variety of bugs into a thicket where I suspect he was feeding chicks. I was pretty impressed with the talent he displayed in this shot where he appears to have both a meal worm and some kind of moth or mayfly.
A skulking masked warbler of wet thickets, the Common Yellow Throat is far more frequently heard than seen. Its “wich-i-ty, wich-i-ty, wich-i-ty” can be heard from the Yukon to Newfoundland, and from southern Florida to southern Mexico.