Barbara and I spent the morning in the area of the lower picnic shelter at Severson Dells, plus near the pond and dells. While we were there, we were pleased to discover some migrants. Barbara had a small flock of warblers that included a Blue-winged, a Chestnut-sided, and an American Redstart. We both heard a Yellow-bellied Flycatcher, and I found 2 Olive-sided Flycatchers, together with 4 Great Crested Flycatcher and what I suspect to be a Willow Flycatcher at the pond.
An American Goldfinch was building a nest in an oak by the parking lot, and there were a lot of Eastern Kingbirds around. A Pileated Woodpecker was in the dells area.