Iowa has a nice state park called The Ledges. It is a hilly canyon with rocks and a fairly clean stream (Iowa has lots of streams, but most are polluted from agriculture) running through it. The park also has a nice wooded area with good spring vegetation. I spent a lot of time watching redbud trees, looking (unsuccessfully) for a butterfly called Henry’s elfin. Here is a redbud tree, and the large leafy plants in the background are called May apples.
But I can’t help myself. Mostly what I pay attention to is the small stuff, like this beefly, probably Bombylius major.
This is a charming little furry insect that can hover in place.