• Wisconsinan glaciation. Glacial retreat. Chicago Wilderness.

  • Leech

  • damselfly larva ( Order Odonata)

  • mayfly larva (Order Ephemeroptera)

  • Caddisfly larva (Order Trichoptera)

  • Aquatic sowbug (Order Isopoda)

  • Mallard Ducks

  • Mourning Dove

  • Black-capped Chickadee Poecile atricapillus

  • Yellow-bellied sapsucker holes in Pinus nigra; male cones

  • Pinus strobus: seed

  • Spruce stomata lines

  • Ash flower galls on male flowers, caused by a mite, females overwinter in Fraxinus bark crevices and bud scales: dioecious

  • Box Elder (Acer negundo)

  • Eastern Sycamore (Platanus occidentalis)

  • Kentucky coffee tree Gymnocladus dioicus - what does this mean?

  • Honey locust Gleditsia triacanthos

  • Lichen: Candelaria concolor, Parmelia sulcata, Physcia millegrana.