Next time you are looking at program flyers or checking trail maps in the trailhead kiosks, stop and do some investigating. Perhaps a phoebe has built a nest beneath the roof or a spider has claimed a nook. I have found them to be a great place to see what insects are out. Many kiosks are adjacent to the river and recently hatched mayflies seem to find them an appropriate place to molt from a dun into a spinner. You may notice their exoskeleton left clinging to the wooden post or the newly-emerged adult spinner residing on the glass window.