October Natural Events Calendar

This October, there is a lot going on in Illinois. Listed here are some of the many natural events occurring throughout Illinois' diverse habitats this month. Look below to find out what our Conservation Director recommends!

  • Tupelo gum seeds begin to fall, Copper Iris matures seed and oyster mushrooms appear at the Grassy Slough Preserve in the Cache River wetlands.
  • Coots and waterfowl such as mallards, gadwell, pintail, and widgeon begin arriving in larger numbers in late October, while neo-tropical migrants such as warblers are moving through the upland forests at Emiquon and Spunky Bottoms.
  • Kettles of migrating raptors such as red-tailed, rough-legged, and occasional red-shouldered hawks can be seen gliding wind currents up and over the river bluffs at Emiquon and Spunky Bottoms.
  • Dragonflies migrating south, praying mantis laying winter eggs and butterflies seek winter shelter at the Grassy Slough Preserve in the Cache River wetlands.
  • Little bluestem prairie and other tall grasses turn to their own beautiful fall colors. On a windy day it looks like a sea at Nachusa Grasslands.
  • Cool days and cooler nights bring on the annual movement of snakes from bottomland wetlands to upland bluff hibernaria; snakes can be seen crossing County Highway 12 at Spunky Bottoms.
  • Prairie grasses turn many shades of fall colors at the Midewin Tallgrass Prairie.
  • Blooms of pin weed, cardinal flower, Riddell's golden rod, New England aster, swamp beggars tics, and boneset at Kankakee Sands.


   Please leave this field empty
x animal

Sign up for Nature eNews!

Sign Up for Nature e-News

Learn about the places you love. Find out
how you can help.

Thank you for joining our online community!

We’ll be in touch soon with more Nature Conservancy news, updates and exciting stories.

Please leave this field empty

I'm already on the list!

Read our privacy policy.