A small, nondescript flycatcher of northern wet thickets, the Alder Flycatcher (Empidonax alnorum) is difficult to distinguish from the Willow Flycatcher by any feature other than voice. The Alder Flycatcher's nest is a coarse, loose cup that nearly always has material hanging off it. The nest of the Willow Flycatcher tends to be neater, with no hanging material. Breeds in wet thickets, especially of alder, maple, and birch, like those here. Winters in early successional scrubby growth.
The container is a camouflaged jar with a logbook and a few trinkets. You will need to bring your own writing weapon to sign the log. There is plenty of parking on the wide road shoulder. I would suggest starting at the north end and work south, since all the caches are on the west side of the road.